Use the formula to find the standard error of the distribution of differences in sample means

Question

Use the formula to find the standard error of the distribution of differences in sample means, X1- X2

Samples of size 105 from Population 1 with mean 93 and standard deviation 14 and samples of size 85 from Population 2 with mean 77 and standard deviation 17

Round your answer for the standard error to two decimal places.

standard error =

Answer 1

SE = (x1 - x2)/sqrt(SD1^2/N1 + SD2^2/N2)

where X1 = 93, SD1 = 14, N1 = 105

X2 = 77, SD2 = 187, N2 = 85