Tacoma Community College has a population mean GPA is 2.73 with population standard deviation of 1.12 for all students who have ever attended the college. Find the probability a randomly chosen student will have a GPA over 3.31. Round to 4 decimal places. If a sample of 9 students are chosen at random, what is the probability their mean GPA will be more than 3.24? % Round to the nearest whole percent..