Hello, I need clarification on the question below. Here is the link to the text book. The questions are in chapter 8. Thank you in advance!

https://www.google.com/books/edition/Research_Methods_in_Physical_Activity_7E/3FR1CQAAQBAJ?hl=en&gbpv=1&printsec=frontcover

Chapter 8 Questions

1. What is the correlation (r) between fat deposits on two body sites? Variable X is the triceps skin-fold measure, and variable Y is the suprailiac skinfold measure. X Y 15 10 18 11 16 11 14 9 14 8 12 7 10 4 13 5 14 5 5 1 6 5 13 7 8 4 11 5

2. Using table 3 in the appendix, determine whether the correlation obtained in problem 1 is significant at the .05 level. What size would the correlation need to be for significance at the .01 level if you had 25 participants?

3. Determine the regression formula (equation 8.2) to predict maximal oxygen consumption (V O2max) from scores on the Cooper Test (12 minute run test). The information that you need follows: X (Cooper Run) Y (V O2max) MX = 2,758 m MY = 50.4 ml . kg . min-1 sX = 295 m sY = 5.7 ml . kg . min-1 r = 0.81

4. Using the prediction formula (equation) you obtained in question 3, what is the predicted V O2max for a participant who ran 2,874 m in the Cooper Test? For a participant who ran 2,578 m in the Cooper Test?