(1 point) Starting salaries of 95 college graduates who have taken a statistics course have a mean of $44,465. Suppose thedistribution of this population is approximately normal and has a standard deviation of $8,235. Using an 81% confidence level, find both of the following: (NOTE: Do not use commas nor dollar signs in your answers.) (a) The margin of error: (b) The confidence interval for the mean u: < M <