Please answer questions given the following scenario (NO hand calculations need for primary test):

I give my class an exam that I know from years of experience yields =78 and= 7.My present class of 32 obtains a mean of 82.Am I correct in assuming that this is a superior class? Using=.05

a.Which test is appropriate (independent samples t, paired t, or z)?

b.What tail is used based on the wording of the question?

c.What is thedf(if applicable)?

d.What is the critical t or z value?

e.What is the decision when the Obtained score = 3.233 (please give the "formal" decision sentence as shown on assignments and PP)

f.Is this class superior to the "population" of scores?