Question

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 =

Answer 1

Solution :

Given that ,

A hypothesis test at the 5% level .

(i)

Significance level = = 0.05