Jim Nasium claims that the mean A.C.T. score attained by two-year college students is 22. Al Dente suspects this claim is too low and selects a random sample of 121 two-year college students. The mean...

Jim Nasium claims that the mean A.C.T. score attained by two-year college students is 22. Al Dente suspects this claim is too low and selects a random sample of 121 two-year college students. The mean of the sample is 23.3 and the population standard deviation is assumed to be 3.3. Test at the 5% significance level.