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The mean number of sick days an employee takes per year is believed to be about...

The mean number of sick days an employee takes per year is believed to be about 10. Members of a personnel department do not believe this figure. They randomly survey 8 employees. The number of sick days they took for the past year are as follows: 10; 6; 14; 4; 10; 9; 8; 9. Let X = the number of sick days they took for the past year. Should the personnel team believe that the mean number is about 10? Conduct a hypothesis test at the 5% level.

(i) Alpha (Enter an exact number as an integer, fraction, or decimal.)
α =

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Answer #1

Solution :

Given that ,

A hypothesis test at the 5% level .

(i)

Significance level = = 0.05

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