Hello, I am having troubles figuring out how to solve this and the correct Excel formulas to get the right answers. Can you please explain how to solve that and the Excel formulas you used for it? :

Remark: For the problems below state precisely your null and alternative hypotheses in terms of your parameter and state your final conclusion about rejecting or not your null hypothesis.

A sample of 12 in-state graduate school programs at school A has a mean tuition of $75,000 with a standard deviation of $7,000. At school B, a sample of 16 in-state graduate programs has a mean of $80,000 with a standard deviation of $4,500. On average, are the mean tuitions different? Test at level of significance of 5%.