Question: In a sample of 30 randomly selected women, it was found that their mean height was 63.4 inches. From previous studies, it is assumed that \(\sigma \)^. = 2.4.

(a) Construct a 99% confidence interval for the population mean.

(b) Determine the minimum required sample size to construct a 99% C.I. for the population mean if estimate must be within 0.8 inch of the population mean. 4. A bottled water association says that the mean number of 8-ounce glasses of water