I need help with computing the test statistic for this one. Thanks! Lester Hollar is vice president for human resources for a large manufacturing company. In recent years, he has noticed an increase inabsenteeism that he thinks is related to the general health of the employees. Four years ago, in an attempt to improve the situation, hebegan a fitness program in which employees exercise during their lunch hour. To evaluate the program, he selected a random sampleof eight participants and found the number of days each was absent in the six months before the exercise program began and in thesix months following the exercise program. Below are the results.Employee BeforeAfter1256.372474637528.53Click here for the Excel Data FileAt the 0.010 significance level, can he conclude that the number of absences has declined? Estimate the p-value.a. State the decision rule for 0.010 significance level. (Round your answer to 3 decimal places.)Reject HO ift >2.998b. Compute the test statistic. (Round your answer to 3 decimal places.)The test statistic is2,892

The table helps to obtain the sample mean and sample standard deviation: Here, di=Before-After…

Answered: b. Compute the test statistic. (Round…

Math

Statistics

b. Compute the test statistic. (Round your answer to 3 decimal places.) The test statistic is 2.892

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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One personality test available on the World Wide Web has a subsection designed to assess the "honesty" of the test-taker. After taking the test and seeing your score for this subsection, you're interested in the mean score, µ, among the general population on this subsection. The website reports that µ is 142, but you believe that u is less than 142. You decide to do a statistical test. You choose a random sample of people and have them take the personality test. You find that their mean score on the subsection is 135 and that the standard deviation of their scores is 28. Based on this information, answer the questions below. What are the null hypothesis (H) and the alternative hypothesis (H,) that should be used for the test? Ho: u is ? ? |H,: µ is ? H : ? In the context of this test, what is a Type II error? A Type II error is ? v the hypothesis that u is ? v when, in fact, μ is| ? ? Suppose that you decide not to reject the null hypothesis. What sort of error might you be making? ?
Does reading the Harry Potter books encourage tolerance? It depends. Italian fifth graders were (randomly) split into two groups. Half the students met with researchers and discussed passages from the Harry Potter books that handled prejudice, while the others talked about unrelated sections. *Data are fabricated but match actual results When determining whether or not the main effects and interactions were significant, for the sake of this assignment, let’s say that the difference between the calculated means/differences must be .7 or higher to be significant. Posttest attitudes toward immigration (7-pt scale) Discussed prejudice-related sections Discussed unrelated sections High identification w/ Harry 6.2 5.0 Low identification w/ Harry 4.2 4.4 Is there a main effect of identification? (calculate marginal means). Is there a main effect of section? (calculate marginal means). Is there an interaction effect? (calculate “difference of differences”)…
You should use a webpage to find the test stat for this problem, Also look at the p-value if the p-value is less than 0.05 there is strong evidence the variables are dependent (there is a difference in proportions). The following data set is the results of some market research were some people were shown one ending (ending 1) and other people were shown a different ending (ending 2), they were asked if they like the product (yes or no) Yes they liked the ending No they did not like the ending ending 1 15 85 ending 2 75 25 Which option below has all the correct options to the chi square test of independence?
Explain the t-test as it relates to its application to one samples
One personality test available on the World Wide Web has a subsection designed to assess the "honesty" of the test-taker. You are interested in the mean score, μ , among the general population on this subsection. The website reports that μ is 145, but you have good reason to believe that μ is less than 145. You decide to do a statistical test. You choose a random sample of people and have them take the personality test. You find that their mean score on the subsection is 139 and that the standard deviation of their scores is 28. Based on this information, complete the parts below. (a) What are the null hypothesis H0 and the alternative hypothesis H1that should be used for the test? H0: H1: (b) Suppose that you decide to reject the null hypothesis. What sort of error might you be making? ▼(Choose one) (c) Suppose the true mean score among the general population on the subsection is 136. Fill in the blanks to describe a Type II error. A Type II error…
Please answer all of the question in the pictures, Please. THank you.
You are part of a trivia team and have tracked your team's performance since you started playing, so you know that your scores are normally distributed with u = 76 and o = 12. Recently, a new person joined the team, and you think the scores have gotten better. The sample data is n = 12, sample mean = 86 Assuming a one tailed test, What is the test statistic?
You are hanging out with your friend on a Saturday night and they decide they want to watch the Ultimate Fighting Championship Event happening that night. As you are watching the mixed martial arts fights you notice that males and females fight separately. You talk to your friend about this and find out that it is due to "safety and sizing" that the sexes do not fight each other. You (being a statistics enthusiast) decide to compare skills between the sexes to see if there is a true difference between the fighters' ability. You take the top 10 male fighters and the top 10 female fighters win/loss ratios (yes these I actually looked up): Male Fighters Female Fighters 19 7.3 23 2.8 21 4.2 2.8 10.5 2.4 2.8 3.2 15 4 5.3 3.9 26 3.8 4 5 3.8
8. Compute 1. Sample statistic 2. Test statistic 1. Statistical results 2. Contextual results 9. Describe
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One personality test available on the World Wide Web has a subsection designed to assess the "honesty" of the test-taker. You are interested in the mean score, μ, among the general population on this subsection. The website reports that μ is 140, but you have good reason to believe that μ differs from 140. You decide to do a statistical test. You choose a random sample of people and have them take the personality test. You find that their mean score on the subsection is 146 and that the standard deviation of their scores is 22. Based on this information, complete the parts below. A. What are the null hypothesis H0 and the alternative hypothesis H1 that should be used for the test? H0: H1: B. Suppose you decide to reject the null hypothesis. Would you be making a type I or type II error?
Only need the last question. Please put anwsers in bold thank you! A researcher with the Department of Education followed a cohort of students who graduated from high school in a certain year, monitoring the progress the students made toward completing a bachelor's degree. One aspect of his research was to determine whether students who first attended community college took longer to attain abachelor's degree than those who immediately attended and remained at a 4-year institution.