Solve this calculation using the file "Math1267 Assignment7"

Question 7 of 13 A health insurance broker records the monthly extended health and dental insurance premiums for 18 non-smoking female clients between the ages of 31 and 40 (measured in $): 121 68 152 79 135 130 103 51 105 58 145 134 130 87 131 70 84 141 You may assume that the data is approximately normally distributed. T-Distribution Table a. Calculate the sample mean and standard deviation. X = Round to 3 significant digits. Round to 3 significant digits. b. Construct the 90% confidence interval for the mean monthly insurance premium for all non-smoking females between the ages of 31 and 40. E = Round to 3 significant digits. Round to the nearest cent