Listed below are the numbers of years it took for a random sample of college students to earn bachelor’s degrees (based on data from the National Center for Education Statistics). Use a 0.01...

Listed below are the numbers of years it took for a random sample of college students to earn bachelor’s degrees (based on data from the National Center for Education Statistics). Use a 0.01 significance level to test the claim that for all college students, the mean time required to earn a bachelor’s degree is greater than 4.0 years. You can assume that the data comes from a normally distributed population.

4   4   4   4   4   4   4.5   4.5   4.5   4.5   4.5   4.5   6   6   8   9   9   13   13   15