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The Human Resources Director for a large company is studying absenteeism among hourly workers. A sample of 120 day shift employees showed 15 were absent more than five days last year. A sample of 80 afternoon employees showed 18 to be absent five or more times. At the 0.01 significance level can we conclude that there is a higher proportion of absenteeism among afternoon employees?
a. State the null and alternate hypotheses.
H0:H1:
b. Find the critical value:c. Compute the value of the test statistic.d. Calculate the p-value.d. What is your decision regarding the null hypothesis?
A hypothesis states a difference exists between two populations. Sometimes this is an obvious conclusion because the means will be very different.
Prepare a three-paragraph discussion of the relationship between p-value, test statistic, level of significance, and critical value.
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