Historically the time reported as 'sick leave' for white collar public service employees has been 8.5 days per year.
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Historically the time reported as "sick leave" for white collar public

service employees has been 8.5 days per year. An auditor is concerned that perceived mismanagement of change processes in the latest year have impacted on staff morale, and may well have resulted in greater sick leave. The auditor's activity showed that the reported sick leave for a sample of 50 employees in the year under review was 8.7 days, with a standard deviation of 1.2 days.

a. Test at the 1% significance level whether the statistics from the sample support the auditor's hypothesis that sick leave has increased. 

b. Use the appropriate macro in Test Statistics.xls to generate the Excel output which could be used to test the hypothesis in part a. Include the resulting Excel output and verify that the output supports your calculations and conclusion in part a.

c. Interpret the p-value in your output for part b. and say how this supports the conclusion.         

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