Question

A factory employer claims that their company follows the hours

of work for its employees and the standard deviation of their

working time is 0.5 hours.

Answer 1

State the hypotheses.

Null hypothesis: The mean working time for the workers in the factory is 6 hours.

Alternative hypothesis: The mean working time for the workers in the factory is not 6 hours.

$H_o:\mu= 6$

$H_a:\mu\neq 6$

Note that these hypotheses constitute a two-tailed test.

For this analysis, the significance level is 0.05. The test method is a one-sample t-test.