Can i please get some help with this question?thank you!

A study was done to determine the average number of homes that a homeowner owns in his or her lifetime. For the 60 homeowners surveyed, the sample average was 4.2 and the sample standard deviation was 2.1. Calculate the 90% condence interval for the true average number of homes that a person owns in his or her lifetime. Round all answers to 2 decimals. a. The point estimate for the average number of homes owned is b. The distribution to use to construct the condence interval is (Answer: Student-t or normal) c. Provide the values A - E for this problem on the following graph of j. Here, A, B and C are areas. D and E are the end values of the condence interval