Please demonstrate your calculation process and show how to get output from excel, I am unsure.

For a marketing class term project, Bob is investigating whether college seniors eat less frequently in fast-food chains than college freshmen. He asked 11 freshmen and 11 seniors to keep track of how many times they ate in a fast-food restaurant during the month of October. Assuming equal variances, can you conclude that the mean is significantly smaller for college seniors at the 5 percent level of significance?

Seniors	Freshmen
10	16
5	9
19	16
15	14
5	18
10	10
18	19
8	15
20	9
7	17
8	20