I'm having trouble solving this problem. Can you please help me? Thank you in advance.

9. The data in the table represent the ages of the winners of an award for the past five years. Use the data to answer questions (a) through (c). 31 54 0 32 56 45 a. Determine the population mean age, u, of the five winners. H = (Type an integer or a decimal.) b. Consider samples of size 2 without replacement. Find the mean of the variable x. Ages X 31, 54 Ages X Full data set 42.5 54, 56 55.0 31, 32 31.5 54, 45 49.5 31, 56 31, 45 43.5 32, 56 44.0 54, 32 38.0 32, 45 38.5 43.0 56, 45 50.5 The mean of the variable x is (Type an integer or a decimal.) c. Find u-, using only the result of part (a). Hi = (Type an integer or a decimal.)