Construct a 95 confidence interval for u1 u2 Two samples a

Construct a 95% confidence interval for u1 ? u2 . Two samples are randomly selected from each population. The sample statistics are given below.

N1= 50 N2 = 60

Sample mean 1 = 25 Sample Mean 2 = 23

S1 = 1.5                               S1 = 1.9

With the information above, construct a confidence interval for u1 and u2.

Solution