For each of the following, indicate whether or not a paired analysis would be appropriate.
a. To investigate the claim that first-year college students tend to gain weight during their first term, you take a random sample of 20 first-year students and weigh them at the beginning and end of their first term.
b. You wonder whether students on your campus tend to drive newer cars than faculty. You take a random sample of 20 students and a random sample of 10 faculty members and ask each person how old their car is.