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Lester Hollar is vice president for human resources for a large manufacturing company. In recent years, he has noticed an increase in absenteeism that he thinks is related to the general health of the employees. Four years ago, in an attempt to improve the situation, he began a fitness program in which employees exercise during their lunch hour. To evaluate the program, he selected a random sample of eight participants and found the number of days each was absent in the 6 months before the exercise program began and in the 6 months following the exercise program. Following are the results. Employee Before 1 9 2 8 After 8 4 71 4 7 9 Click here for the Excel Data File At the 0.050 significance level, can he conclude that the number of absences has declined? a. What are the null and alternate hypotheses? Ho: HBefore-HAfter HasO; H: Hd>0 Ho: HBefore-HAfter Hds 0: H: Hd<0 Ho: HBefore-HAfter Hdz 0; H Hd> 0 b. Compute the test statistic. (Round your answer to 3 decimal places.)

Lester Hollar is vice president for human resources for a large manufacturing company. In recent years, he has noticed an increase in absenteeism that he thinks is related to the general health of the employees. Four years ago, in an attempt to improve the situation, he began a fitness program in which employees exercise during their lunch hour. To evaluate the program, he selected a random sample of eight participants and found the number of days each was absent in the 6 months before the exercise program began and in the 6 months following the exercise program. Following are the results. Employee Before 1 9 2 8 After 8 4 71 4 7 9 Click here for the Excel Data File At the 0.050 significance level, can he conclude that the number of absences has declined? a. What are the null and alternate hypotheses? Ho: HBefore-HAfter HasO; H: Hd>0 Ho: HBefore-HAfter Hds 0: H: Hd<0 Ho: HBefore-HAfter Hdz 0; H Hd> 0 b. Compute the test statistic. (Round your answer to 3 decimal places.)

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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c. Compute the p-value. (Round your answer to 4 decimal places.) p-value d. What is your decision regarding the null hypothesis? Reject He We Do not reject He e. Interpret the result. evidence that change reduced absences.
Transcribed Image Text:c. Compute the p-value. (Round your answer to 4 decimal places.) p-value d. What is your decision regarding the null hypothesis? Reject He We Do not reject He e. Interpret the result. evidence that change reduced absences.
14 Lester Hollar is vice president for human resources for a large manufacturing company. In recent years, he has noticed an increase in absenteeism that he thinks is related to the general health of the employees. Four years ago, in an attempt to improve the situation, he began a fitness program in which employees exercise during their lunch hour. To evaluate the program, he selected a random sample of eight participants and found the number of days each was absent in the 6 months before the exercise program began and in the 6 months following the exercise program. Following are the results. Employee Before 1 9 2 8 3 4 71 8 After 8 4 8 4 7 9 5 Click here for the Excel Data File At the 0.050 significance level, can he conclude that the number of absences has declined? a. What are the null and alternate hypotheses? Ho: HBefore-HAfter Ho: HBefore- HAfter Ho: HBefore - HAfter Hd0; H₁: Hd>0 Hd0; H: Hd<0 Hdz 0; Hi Hd> 0 b. Compute the test statistic. (Round your answer to 3 decimal places.)
Transcribed Image Text:14 Lester Hollar is vice president for human resources for a large manufacturing company. In recent years, he has noticed an increase in absenteeism that he thinks is related to the general health of the employees. Four years ago, in an attempt to improve the situation, he began a fitness program in which employees exercise during their lunch hour. To evaluate the program, he selected a random sample of eight participants and found the number of days each was absent in the 6 months before the exercise program began and in the 6 months following the exercise program. Following are the results. Employee Before 1 9 2 8 3 4 71 8 After 8 4 8 4 7 9 5 Click here for the Excel Data File At the 0.050 significance level, can he conclude that the number of absences has declined? a. What are the null and alternate hypotheses? Ho: HBefore-HAfter Ho: HBefore- HAfter Ho: HBefore - HAfter Hd0; H₁: Hd>0 Hd0; H: Hd<0 Hdz 0; Hi Hd> 0 b. Compute the test statistic. (Round your answer to 3 decimal places.)
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