The owner of a computer repair shop has determined that their daily revenue, X, follows a normal distribution and has mean u = $7200 and standard deviation 0 = $1200. The owner would like to plan a budget based on the expected revenue for the next 30 days (n=30). They set their daily budget to be the 80th percentile of the average daily revenue. Determine the 80th percentile of the average daily revenue. (hint: use "E = U and _ ar . _ 03? - W ,the equation X 'H'H' 20"