hi there, I done an assignment last year and didn't do to well. I was wondering if someone with knowledge of excel can assist on how I should have answered the question.

Hypothesis Testing {consider a = 5%} It has been suggested at a recent Board meeting that the average System Cost for every Location, is now more than $7,500. Does the data confirm this hypothesis? To answer this question, you will need to conduct an appropriate hypothesis test for System Cost in each Location