designed to reduce lost time due to on-the-job accidents. In the 50 months

prior to the safety program, lost time due to accidents averaged 99 hours per

month, with a standard deviation of 12 hours per month. In the 48 months

since the program began, employee lost time due to on-the-job accidents has

averaged 91 hours per month, with a standard deviation of 14 hours per

month.

Perform a hypothesis test to test the claim that the safety program is effective

in reducing lost time due to on-the-job accidents. Use a = 0.01

Thank you in advance!