Suppose that we have disjoint normal populations A and B and we want to find the standard error estimate for estimating the difference in their means.We have an IRS from A of size 11 with variance 25 and an IRS from B of size 6 with variance 36.What is the resulting standard error estimate if we assume both populations have the same population variance?

Group of answer choices

2.70

2.68

NONE OF THE OTHERS

2.73

2.72