1) Professor
Barson wants to know if his advanced statistics class has a good
grasp of basic math. Six students are chosen at random from the
class and given a math proficiency test. The six students get
scores of 62, 92, 75, 68, 83, and 90.
a. Conduct
a hypothesis test to see whether the mean score from this year’s
class is different than last year’s class mean of 80. Then,
construct a 95% confidence interval for this year’s class mean.