Answered: Lester Hollar is vice president for…

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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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 six months before the exercise program began and in the six months following the exercise program. Below are the results.

Employee	Before	After
Bauman	6	2
Briggs	5	6
Dottellis	5	3
Lee	7	7
Perralt	4	6
Rielly	5	2
Steinmetz	7	3
Stoltz	5	4

At the 0.050 significance level, can he conclude that the number of absences has declined? Estimate the p-value.

a. State the decision rule for 0.050 significance level.

b. Compute the test statistic

c. The p-value is

d. State your decision about the null hypothesis.

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