D Question 4 4 pts Salaries of 11 college graduates who took a statistics course in college have a mean of $83,437 and a standard deviation of $1,508. Construct a 95% confidence interval for estimating the population mean. Enter the upper bound of the confidence interval. (Round your answer to nearest whole dollar.) D Question 5 4 pts Salaries of 25 college graduates who took a statistics course in college have a mean of $77,407 and a standard deviation of $1,630. Construct a 99% confidence interval for estimating the population standard deviation. Enter the upper bound of the confidence interval. (Round your answer to nearest whole dollar.)