Question: Because James really wanted to know the class average score, he asked it to his professor. The professor said the class average was 68 .

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. What hypothesis test method should James use? F-test Z-test ANOVA t-test Question 19 (3 points) Saved Define null and alternative hypotheses of the hypothesis test. H0:x=68,H1:x=68H0:=68,H1:=68 Define null and alternative hypotheses of the hypothesis test. H0:x=68,H1:x=68H0:=68,H1:=68H0:x=68,H1:x=68H0:=72,H1:=72H0:=68,H1:=68 Question 20 (4 points) Get a test statistic sch as ZSTAT, tSTAT, or FSTAT for the hypothesis test. 0.6871800.687181.326 Get critical values for the test statistic in Question 20 on the hypotheses in Question 19 . Use =5%. 1.963.5732.11992.9208 Question 22 (4 points) 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)

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