Is there a difference in profit in the first quarter compared to the second quarter for investors' portfolios? Each participant's investment portfolio was evaluated in the first and second quarters to see if there was a difference. Which test should be conducted? Calculate the results, write up the results, and interpret what the results mean. The data set is below:

First	Second
17	12
18	14
19	16
20	16
21	16
22	18
23	20
24	22
14	18