Because James really wanted to know the class average score, he asked it to his professor. The professor said the class average was 68 . But James could not fully believe it because he had a couple of high scores such as 97 and 100 in his data. So he decided to prove it through a hypothesis test. Choose a right answer for the conclusion of the hypotheses. a) Fail to reject Ho because the test statistic is between the critical values. b) James does not have sufficient evidence to say that the class average is not 68 . C) Both (a) and (b) d) None of (a) or (b)