: Homework: Module 5-Sampling Distributions of HW Score: 4037%, 10.9 of 27 points Question 13, Instructor-created question 0 Poms: 0 O\" the mean and pr The time to get an oil change at a certain car dealership averages 42.3 minutes with a standard deviation of 8'6 a) There are 45 cars booked for oil changes today What is the probability that the jobs can be done in an minutes. average of 38 minutes or less? Use 4 decimal places please. b) Suppose 90 oil changes were done in one particular week. There is a 95% chance that the mean time was more than minutes. 110:! on Use 1decimal place please Ll"