1157127fqulzzeslsecurediockdown D Fluestion 4 Salaries of 25 college graduates who took a statistics course in college have a mean of $78,859 and a standard deviation of $1,070. Assume that prior studies have shown that the standard deviation of salaries of college graduates who have taken a statistics course in college is $2000. Construct a 98% condence interval for estimating the population mean. Enter the upper bound of the condence interval. (Round your answer to nearest whole dollar.) Question 5 R Salaries of 11 college graduates who took 3 statistics course in college have a mean of $75,618 and a standard deviation of $1,625. Construct a 90% condence interval for estimating the population standard deviation. Enter the lower bound of the condence interval. (Round your answer to nearest whole dollar.) l D NOV e