Question C.

vey of 39 randomly selected "IPhone" owners showed that the purchase price has a mean of $403 with a sample standard ation of $160 ompute the standard error of the sample mean. (Round the final answer to the nearest whole number.) dard error 26 compute the 95% confidence interval for the mean. (Round the final answers to 2 decimal places.) confidence Interval is between $ 351.13 and $ 454.87 How large a sample Is needed to estimate the population mean within $11 at a 95% degree of confidence? (Round the final answer the nearest whole number.) Imple size