pounds. Construct a 90% confidence interval of the mean weight loss for all such subjects. overweight adults. After one year, the mean weight loss was 7.1 pounds with a standard deviation of 4.8 n a...

Extracted text: pounds. Construct a 90% confidence interval of the mean weight loss for all such subjects. overweight adults. After one year, the mean weight loss was 7.1 pounds with a standard deviation of 4.8 n a test of the Atkins weight loss program, 27 individuals participated in a randomized trial with 8) A SRS of 40 of the same model of car results in an annual mean maintenance cost of $575 and a standard deviation of $86. Construct a 95% confidence interval for the annual mean maintenance cost of all cars of that model type. 9) The GPA for a SRS of CCC students is given below. 3.70 1.92 2.00 2.15 2.65 3.15 2.86 3.19 2.33 3.21 3.45 1.25 2.90 2.56 1.14 1.76 a) Construct a 90% confidence interval for the population mean GPA of all CCC students. b) Does your interval suggest the population mean is greater than 2.0? Explain your reasoning.