At a 99% level of confidence, test the null hypothesis that the total amount of money spent by the students did not exceed $9,000,000.

1. University X has 20,000 students. Suppose you have drawn a simple random sample of 400 students from University X and recorded how much money each student spent on text books in 2017. For your sample, sample mean (X bar) is $480, and sample standard deviation (s) is $220. At a 99% level of condence, test the null hypothesis that the total amount of money spent by the 20,000 students, combined, in 2017 did not exceed $9,000,000. (Show work)