Summary about Mukesh Ambani, How did he become rich? and also how does he inspires you to become Entrepreneur?
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What is the shape of this distribution? Hint: Use the values of the mean, median, and mode to infer the shape of this distribution.
3. State whether the mean increases, decreases, or has no change in each of the following scenarios.
a) A 13th value of 10 is added to the data. _______________
b) A 13th value of 4 is added to the data. _______________
c) The value of 8 is removed from the data. _______________
d) A 13th value of 8 is added to the data. _______________
e) The value of 12 is removed from the data. _______________
f) The value of 7 is removed from the data. _______________
4. State the new value of the mean in each of the following scenarios.
a) Each value is multiplied by 4. _______________
b) Each value is divided by 2. _______________
c) 8 is added to each value. _______________
d) 4 is subtracted from each value. _______________
5. Subtract the mean from each score. What is the sum of the differences?
3.Explaining Sample Variance Exercise
1. What are the degrees of freedom for sample variance in the following samples? Hint: The degrees of freedom are located in the denominator of the sample variance formula.
a) n = 50
b) n = 10
c) n = 12
d) n = 120
e) n = 75
2. Suppose we select a sample of size 20 from the following populations. Given the following variances for each population, what will the sample variance be on average when we compute the following formula: ?
a) = 86
b) = 121
c) = 144
d) = 329
e) = 600
3. Suppose we select a sample of size 200 (instead of a sample of size 20) from each population (a to e) listed in Question 2. For each population, what will the sample variance equal, on average, when we compute the following formula: ?
4.Probability and Conditional Probabilities Exercise
Researchers are often interested in the likelihood of sampling outcomes. They may ask questions about the likelihood that a person with a particular characteristic will be selected to participate in a study. In this exercise, we will select a sample of one participant from the following hypothetical student population of men and women living on or off campus. The population is summarized in the following table.
Male Female Row Totals
On campus 30 25 55
Off campus 20 25 45
Column Totals 50 50 1001. What is the probability of selecting a male participant?
2. What is the probability of selecting a female participant?
3. What is the probability of selecting a student who lives on campus?
4. What is the probability of selecting a student who lives off campus?
5. What is the probability of selecting a male student, given that he lives off campus?
6. What is the probability of selecting a female student, given that she lives on campus?
7. What is the probability of selecting a male student, given that he lives on campus?
8. What is the probability of selecting a female student, given that she lives off campus?
9. What is the probability of selecting a student who lives on campus, given that he is a male?
10. What is the probability of selecting a student who lives off campus, given that he is a male?
11. What is the probability of selecting a student who lives on campus, given that she is a female?
12. What is the probability of selecting a student who lives off campus, given that she is a female?
5.
Sampling Distribution of the Mean Exercise
Suppose a researcher wants to learn more about the mean attention span of individuals in some hypothetical population. The researcher cites that the attention span (the time in minutes attending to some task) in this population is normally distributed with the following characteristics: 20 36 . Based on the parameters given in this example, answer the following questions:
1. What is the population mean ()?
2. What is the population variance ?
3. Sketch the distribution of this population. Make sure you draw the shape of the distribution and include the mean plus and minus three standard deviations.
Now say this researcher takes a sample of four individuals (n = 4) from this population to test whether the mean attention span in this population is really 20 minutes attending to some task.
4. What is the mean of the sampling distribution for samples of size 4 from this population? Note: The mean of the sampling distribution is .
5. What is the standard error for this sampling distribution? Note: The standard error of the sampling distribution is .
6. Based on your calculations for the mean and standard error, sketch the sampling distribution of the mean taken from this population. Make sure you draw the shape of the distribution and include the mean plus and minus three standard errors.
7. If a researcher takes one sample of size 4 (n = 4) from this population, what is the probability that he or she computes a sample mean of at least 23 (M = 23) minutes? Note: You must compute the z-transformation for sampling distributions, and then refer to the unit normal table to find the answer.
8. Now say a researcher decides to take a sample of size 36 (n = 36) and calculates the same sample mean (M = 23).
a. Compute the mean and standard error for this new sampling distribution. Sketch the sampling distribution taken from this same population. Make sure you draw the shape of the distribution and include the mean plus and minus three standard errors. Hint: A larger sample size will decrease the standard error of the mean.
b. Now what is the probability of obtaining at least this sample mean of 23 minutes when n = 36?
9. From which sample (n = 4 or n = 36) is there a lower probability of collecting a sample mean of 23 from a population with a mean of 20?
10. What does your answer to question 9 indicate about the relationship between sample size and standard error?6.Power Exercise
1. Two researchers make a test concerning the effectiveness of a drug use treatment. Researcher A determines that the effect size in the population of males is d = 0.36; Researcher B determines that the effect size in the population of females is d = 0.20. All other things being equal, which researcher has more power to detect an effect? Explain.
2. Two researchers make a test concerning the levels of marital satisfaction among military families. Researcher A collects a sample of 22 married couples (n = 22); Researcher B collects a sample of 40 married couples (n = 40). All other things being equal, which researcher has more power to detect an effect? Explain.
3. Two researchers make a test concerning standardized exam performance among senior high school students in one of two local communities. Researcher A tests performance from the population in the northern community, where the standard deviation of test scores is 110 ( ); Researcher B tests performance from the population in the southern community, where the standard deviation of test scores is 60 ( ). All other things being equal, which researcher has more power to detect an effect? Explain.
4. Explain how your answer to question 3 is related to standard error. Hint: You need to refer to the formula for computing standard error in order to answer this question.
5. Two researchers make a test concerning the same hypothesis. Researcher A tests her hypothesis at a .05 level of significance ( ); Researcher B tests his hypothesis at a .01 level of significance ( ). All other things being equal, which researcher has more power to detect an effect? Explain.
6. Two researchers make a test concerning the effects of music on mood. Researcher A tests the effects of rock music on mood and determines that the likelihood of committing a Type II error is = .20; Researcher B tests the effects of classical music on mood and determines that the likelihood of committing a Type II error is = .40. All other things being equal, which researcher has more power to detect an effect? Explain.7.The t Table Exercise
Work through the following exercise and write down what you see in the t-table. This will help familiarize you with the table.
The t-table: The degrees of freedom (df) are listed down the far left column. The level of significance for a one-tailed test (top) and two-tailed test (bottom) is listed for each column to the right of the degrees of freedom. So to read the table, you simply need to know the level of significance and degrees of freedom (n 1) for the test.
Increasing the level of significance and degrees of freedom
1. For the following degrees of freedom, list the critical values for a two-tailed test at a .01, .05, and .10 level of significance.
.01 .05 .10
df = 8 ___ ___ ___
df = 20 ___ ___ ___
df = 40 ___ ___ ___
df = 120 ___ ___ ___
2. As the level of significance increases (from .01 to .10), does the critical value increase or decrease?
3. As the degrees of freedom increase (from 8 to 120), does the critical value increase or decrease?
4. How is this related to power? Hint: If you are having trouble, refer to Sections 8.8 and 8.9 in Chapter 8 for a review of factors that influence power.
Comparing the z and the t
5. For the following degrees of freedom, list the critical values for a one-tailed and two-tailed test at a .01 and .05 level of significance.
.01 .05
df = ___ ___ (One-tailed test)
df = ___ ___ (Two-tailed test)
6. Refer to Table 8.4 in Chapter 8. How do the critical values you listed in the previous question compare with those listed for the z-distribution. Explain.8.Independent or Dependent Samples Exercise
For each of the following research questions, you will read an independent and dependent samples study to test that research question. Identify which study used independent and which used dependent samples.
1. How does winning influence self-efficacy (or belief in ones ability) among high school sports athletes?
Study 1: Researchers hypothesized that the more wins a team has, the more teammates will believe in their own abilities (self-efficacy). To test this, they selected a group of sports athletes from teams with few wins during the previous season and a second group of sports athletes from teams with many wins during the previous season. They tested whether self-efficacy significantly differed between groups.
Study 2: Researchers hypothesized that the more wins a team has, the more teammates will believe in their own abilities (self-efficacy). To test this, they measured self-efficacy among athletes during a winning season and again during a losing season the following year. They tested whether the difference in self-efficacy between winning and losing seasons was significantly different.
2. Will levels of the brain chemical dopamine increase in response to food rewards?
Study 1: Researchers hypothesized that dopamine would increase in response to a high-fat food (reward) versus a similar low-fat food. To test this, they presented four adult female Macaca fascicularis monkeys with a high- and low-fat raisin and measured the levels of dopamine in the brain in response to each reward. They tested whether the difference in dopamine levels was significantly different.
Study 2: Researchers hypothesized that the levels of dopamine would increase in response to a larger food reward. To test this, they had animal subjects press a lever to receive a food reward and measured levels of dopamine in the brain in response to this reward. One group received a small food reward and a second group received a large food reward. They tested whether dopamine levels significantly differed between groups.
3. Do English as a second language (ESL) children have the same knowledge of word meanings as English as a first language (ELI) children?
Study 1: Researchers hypothesized that ESL children would have greater difficulty in phonological awareness (the ability to notice, think about, or manipulate the individual sounds in words). To test this, they had one group of ESL children and a second group of ELI children complete a phonological awareness assessment and recorded the scores. They tested whether phonological awareness assessment scores significantly differed between groups.
Study 2: Researchers hypothesized that ESL children would have the same knowledge of word meanings as do their ELI relatives. To test this, they recorded scores on a vocabulary knowledge assessment for ESL children and comparison ELI relatives (of similar ages). They tested whether the difference in vocabulary knowledge assessment scores between these related children was significantly different.
4. How do psychosocial attitudes (those based on the interaction between the individual and the social environment) toward romantic love vary by race/culture?
Study 1: Researchers hypothesized that cultures focused on group identity (collectivist) would place less emphasis on romantic love compared with cultures focused on individual identity (individualistic). To test this, they collected a sample of Chinese (collectivist) and American (individualistic) adolescents and had them complete a romantic love assessment survey. They tested whether scores on this survey significantly differed between groups.
Study 2: Researchers hypothesized that psychosocial attitudes toward love in individualistic cultures would be more negative following the loss of a romantic relationship. To test this, they recorded perceptions of love among a group of American college students during and following a romantic relationship. They tested whether the difference in perceptions of love during and after a romantic relationship was significantly different.
5. Does snacking between meals reduce the number of calories consumed in a meal?
Study 1: Researchers hypothesized that snacking between meals would only reduce calories consumed in the meal if participants thought of the foods as snack foods (referred to as cognitive satiety). To test this, on 1 day, they gave a group of participants 100 kcal of a food they thought of as a snack food and recorded the number of calories consumed in the subsequent meal. On the second day, they gave the same group of participants 100 kcal of a food they thought of as a meal food and recorded the number of calories consumed in the subsequent meal. They tested whether the difference in calories consumed in the meal from day 1 to day 2 significantly differed.
Study 2: Researchers hypothesized that snacking between meals would reduce the number of calories consumed in a meal. To test this, they recorded the number of calories consumed in a meal following one snack (Group 1S) and following three snacks (Group 3S). The meal was buffet style, meaning that participants could consume as much as they wanted in the meal. The researchers tested whether calories consumed in the meal significantly differed between groups.
Week 8 – Assignment: Construct Confidence Intervals and Statistical TestsInstructionsFor this task, write a paper using the following structure: Begin with a one or two-paragraph introduction that summarizes the meaning of the reading material.
Answer all of the questions included in Parts 1 and 2 below. Be sure to answer questions using complete sentences and show all work in your calculations.
Provide a written conclusion, when appropriate, for the problem that you are addressing.
Include an essay section in your paper, which is described in Part 3 below.
Use the last part of your paper to include a paragraph or two that explains the information that you learned in the assignment. Support your paper with at least two references.
Part 1
Explain the difference between a 95% confidence interval and a 99% confidence interval in terms of probability.
a) To construct a 95% confidence interval for a population mean , what is the correct critical value z*?
b) To construct a 99% confidence interval for a population mean , what is the correct critical value z*?
Explain what the margin of error is and how to calculate it.
A survey of a group of students at a certain college, we call College ABC, asked: About how many hours do you study in a week? The mean response of the 400 students is 15.8 hours. Suppose that the study time distribution of the population is known to be normal with a standard deviation of 8.5 hours. Use the survey results to construct a 95% confidence interval for the mean study time at the College ABC.
Explain the difference between a null hypothesis and an alternative hypothesis.
Suppose that you are testing a null hypothesis H0: = 10 against the alternate H1: 10. A simple random sample of 35 observations from a normal population are used for a test. What values of the z statistic are statistically significant at the = 0.05 level?
Describe the four-step process for tests of significance according to the textbook.
Part 2A study of a group of 40 male league bowlers chosen at random had an average score was 176. It is known that the standard deviation of the population is 9.
a) Construct the 95% confidence interval for the mean score of all league bowlers.
b) Construct the 95% confidence interval for the mean score of all league bowlers assuming that a sample of size 100 is used instead of 40, and the same mean and standard deviation occur.
c) Give the margin of error for each interval.
d) Explain why one confidence interval is larger than the other.
Michelangelos artistic contributions during the Italian Renaissance formed him into the worlds most influential artist.paragraph one: introduction
proof 2: Michelangelos works of art were revolutionary.paragraph 2: discuss the Pietaparagraph 3: discuss the David sculptureparagraph 4: discuss the Entombment painting
proof 2: Sistine Chapelparagraph 5: discuss the techniqueparagraph 6: discuss the importance and significanceparagraph 7: discuss the time lapse, how long did he stand and paint for and connect that to his passion
proof 3: Leonardo da Vinci counterattackparagraph 8: discuss how talented Leonardo was, mentioning his inventions and how good the Last Supper wasparagraph 9: (this is where you counterattack), discuss how his impatient and decision to paint on fresco format was a mistake and as a result, the Last Supper is crumblingparagraph 10: discuss how his topics in his paintings were always themes and how this made him less passionate about his art and more about the money. People had to direct him in order for him to be inspired about anything.paragraph 11: conclusion
Now that you have reviewed the theories of Michael Porter, this is an opportunity for you to connect these theories to the current environmental factors that influence an industry of interest to you.Choose an industry that is of interest to you try to go beyond what is right in front of you think of something that you are really interested in it will make this assignment a whole lot more interesting for you (and for me, because your enthusiasm will shine through)
Provide information for each of the questions presented in this chapter pertaining to an environmental analysis in regards to your chosen industry
Present this information in a slide deck with voice narration (Record a PPT Presentation with Narration)
No more than 10 slides
Be creative with how you present the information
Your presentation should be creative, professional, and interesting to view and listen to
You may submit a PPT file to ulearn, or submit a link for your presentation to be viewed on YouTube.
Questions to be answered:What are the strategically relevant factors in the macro-environment?
How strong are the industrys competitive forces?
Identify the 3 strongest common drivers listed on table 3.3 that most likely contributed to these industry changes, and explain the specifics of these drivers as they relate to this industry
How are industry rivals positioned in the market?
What strategic moves are rivals likely to make next?
What are the industrys key factors?
Is the industry outlook conducive to good profitability?
what can analysing the language of literature tell us that other approaches might not show? Illustrate your discussion with analyses of extracts from two texts, one prose and one poetry, making use of topics we have looked at on the module.Note that if you would like to include extracts (or a whole poem), these need to be placed in an appendix to your essay, or they will count towards the word limit. you are likely to be drawing on moments across a whole novel, short story or play, in which case you will just include relevant quotations in your essay.The word count for this assessment is 2000 words. (10% more or less is acceptable)Note:
Topics looked at in this module are; Lexical choice, Modality and Attitude, Participants and processes, Representing speech and thought in fiction and Speech Acts. Reading list Language in literature: an introduction to stylistics. Book – by Toolan, Micheal J – 1998
Write a critical essay, whose only and sole original contribution will be a particularly incisive critical analysis of one of the major ethical notions covered and elaborated upon in this class (for example, you might write a critical essay evaluating the relative merits and demerits of Kants Categorical Imperative as a fundamental ethical demand).So basically a critical essay evaluating the relative merits and demerits of Kants Categorical Imperative as a fundamental ethical demand. Describe what categorical imperative is in ethics, compare it to hypothetical imperatives, talk about some merits and demerits of Kant’s Categorical Imperative.
Assignment Overview For this Case study, we will be looking at a fictional case of a manager caught between a rock and hard place. Nick Cunningham is a manager at Synergon, a high-powered company involved in purchasing poorly managed companies and then restructuring them to become more profitable. However, Synergon has now purchased Beauchamp, Becker, and Company, which is a well-managed and highly profitable company. Nick is in an awkward position because he is in charge of managing this merger, but he also knows that the success of the merger is dependent on Beauchamps managing director and other top leaders remaining in their positions and continuing their solid work. However, Nicks bosses are not known for taking a conciliatory approach towards companies they purchase and usually force major changes on any company that they acquire. Predictably, Nick is faced with a threat of retirement by Beauchamps managing director Julian Mansfield due to Synergons strict policies and approach. Before beginning the Case Assignment, make sure you have thoroughly reviewed the tutorial and textbook readings from the background materials. Pay special attention to readings on causes of conflict, types of conflict, and conflict management styles. For this assignment you will need to apply concepts from the background materials to this fictional case. Case Assignment Once you have finished reviewing the background materials, take a look at this following article and think about how the concepts from the background materials apply to this fictional case: Cliffe, S. (1999). Can This Merger Be Saved? Harvard Business Review, 77(1), 28-44. [EbscoHost] Then write a 4- to 5-page paper addressing the following questions: Do you think this conflict that Nick Cunningham faces is functional or dysfunctional? Explain your reasoning, and cite Bauer and Erdogan (2011) or Luthans et al. (2015) in your answer. What is the source of this conflict? Use the terminology from Bauer and Erdogan (2011), or Luthans et al. (2015) in your answer. For example, is this conflict a result of relationship/interpersonal issues? Or from tasks/roles? Other? Of the five styles of conflict management discussed in Shearhouse (2011) or Bauer and Erdogan (2011) which one do you think would be the best approach for Nick Cunningham to take? What other advice would you give Nick Cunningham based on the concepts discussed in any of the background readings?
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For the Module 3 SLP you will be applying the concepts you learned in the background materials regarding conflict and negotiation to a situation from your own personal experiences. Carefully review the background materials regarding types of conflict, causes of conflict, negotiation stages, and conflict management styles. It is important to first understand these comments from the background readings before starting this assignment. Once you have thoroughly reviewed the background materials, think of a situation in the workplace where a conflict erupted and management had to intervene and some type of negotiation was involved. Then write a three page paper addressing the following four questions, and make sure to cite at least one of the required background readings for each of your four answers : Was this conflict functional or dysfunctional? What was the cause of the conflict? Use the terms from the background materials in your answerfor example, was the conflict a result of interpersonal issues, a specific task involved, due to inter-organizational issues, etc. Of the five approaches to conflict management outlined in Shearouse (2011) or Bauer and Erdogan (2011), which approach most closely describes the approach used by management to resolve this conflict? Did the negotiations involve integrative or distributive bargaining? What stages of negotiation did management go through, and did these stages match the five stages discussed in Bauer and Erdogan (2011)?
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Case Assignment Making decisions as a group can be very challenging. It can lead to conflict and take up huge amounts of time, and often it is difficult to come to an agreement. Fortunately, several different techniques have been developed to overcome some of these difficulties. No one technique is considered the best for all situations, as all of the techniques have advantages and disadvantages. For this assignment, first thoroughly review the background readings and pay close attention to three group decision-making processesthe Delphi technique, brainstorming, and the Nominal Group Technique. Pay close attention to the discussion of these methods in the assigned readings, particularly Braintools (Brainstorming), CDC (Nominal Group Technique) and Haughey (Delphi). Below are three different scenarios. For each scenario, explain which group decision-making technique you would choose out of brainstorming, nominal group, or Delphi. Justify your answer with references from the required background materials. Your paper should be 45 pages in length: The company you work for is in crisis. Several new competitors have been rapidly growing and taking away your customers. Your companys sales are steadily dropping. You and the rest of the top management team know that creative new strategies are needed in order to keep up with the new competitors. Nobody is sure what needs to be done, but it is clear something drastic and original needs to happen in order to keep the company afloat. The top management team members are all extroverts who are not afraid to speak up at meetings, but they are often prone to conventional thinking. Which group decision-making technique do you recommend? Explain your reasoning, using the background readings to support your answer. Your company is facing cost overruns and needs solutions on how best to cut costs. The top management team includes both introverts and extroverts, with the extroverts usually dominating the conversation at meetings. Furthermore, meetings with this group often go off the agenda and drift into tangential subjects. A quick decision needs be made with input from all members of the team. Which group decision-making technique do you recommend? Explain your reasoning, using the background readings to support your answer. Your company needs to purchase a new software system as the old one is out of date. Your team consists of IT managers from all of the companys overseas divisions. These managers are highly skilled and very knowledgeable about the different software options, but it is difficult to arrange a meeting with them due to the time differences and their very busy schedules. The decision is not urgent, but you need to make a decision within the next three months. Which group decision-making technique do you recommend? Explain your reasoning, using the background readings to support your answer. Conclude your paper with a discussion about which of the three group decision-making processes (nominal group, brainstorming, or Delphi) is the most useful to you, considering the types of decision situations in which you are typically involved. Explain your reasoning, and use references from the background materials to support your answer.
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