Significance level = .05, test the claim that the mean number of months in group A is greater than the mean in group B Group A People 140 Mean 10.3...

Significance level = .05, test the claim that the mean number of months in group A is greater than the mean in group B

Group A

People 140

Mean 10.3

Standard Deviation 1.2

Group B

People 127

Mean 8.5

Standard Deviation 1.5

Critical Value = 1.96