Baby weights: Following are weights, in pounds, of 10 two-month-old baby girls. It is reasonable to assume that the population is approximately normal. 12.23 11.87 12.34 11.48 12.66 8.51 14.13 10.30 9.34 8.63 Send data to Excel (a) Construct an 80% confidence interval for the mean weight of two-month-old baby girls. (b) According to the National Health Statistics Reports, the mean weight of two-month-old baby boys is 10.8 pounds. Based on the confidence interval, is it reasonable to believe that the mean weight of two-month-old baby girls may be the same as that of two-month-old baby boys? Explain. Part: 0 / 2 Part 1 of 2 (a) An 80% confidence interval for the mean weight of two-month-old baby girls is