PROBLEM 2 Is the average life span of the drug users the same as the ones of the non-drug users? Tes

PROBLEM 2

Is the average life span of the drug users the same as the ones of the non-drug users?

Test at 10 significance level

Non-drug user: Average life span = 825 years; standard deviation = 8 years; n = 100

Drug user: Average life span = 725 years; standard deviation = 10 years; n = 90