(1 point) Starting salaries of 125 college graduates who have taken a statistics course have a mean of $43,475 and standard deviation $9,297. Using a 90% confidence level, find both of the following: Note: Enter your answers in terms of dollars: $xxx. xx.
(a) The margin of error:

(b) The 90% confidence interval for the mean \mu starting salary of all college graduates who have taken a statistics course:
< \mu <