95% of the population of weight losses lies between -1.66 pounds and 23.66 pounds. (d) Construct a 90% confidence interval on the population mean…

95% of the population of weight losses lies between -1.66 pounds and 23.66 pounds. (d) Construct a 90% confidence interval on the population mean weight loss. Confident that the population mean weight loss, , of this exercise program is between 1.28 pounds and 20.72 pounds. How Do We Choose the Sample Size for a Study? (e) Which confidence interval is wider?