Question: Chapter 9: Hypothesis Tests for a Single Population Mean Test the claim that the mean GPA of night students is larger than 3.1 at the

at the 0.05 significance level. The null and alternative hypotheses would be:

Question 1 Ho: u =3.1 Ho:p = 0.775 Ho:u = 3.1 Ho:/

= 3.1 Ho:p = 0.775 Ho:p = 0.775 Statistics students believe that

Chapter 9: Hypothesis Tests for a Single Population Mean Test the claim that the mean GPA of night students is larger than 3.1 at the 0.05 significance level. The null and alternative hypotheses would be: Question 1 Ho: u =3.1 Ho:p = 0.775 Ho:u = 3.1 Ho:/ = 3.1 Ho:p = 0.775 Ho:p = 0.775 Statistics students believe that the mean score on a first statistics test is 65. The instructor thinks that H1: u > 3.1 H1 :p > 0.775 H1 :u # 3.1 H1 :M 65 The significance level is: (to 2 decimals) B. State the mean of the sample: Based on this we: O Reject the null hypothesis C. State the standard error of the sample means: O Fail to reject the null hypothesis D. State the test statistic: t = E. State the p-value: Question 3 F. Decision: Reject the null hypothesis. O Fail to reject the null hypothesis. G. Hopefully you drew a picture of all of this. Question 2Test the claim that the mean GPA of night students is significantly different than 2.5 at the 0.2 Question 5 significance level. The null and alternative hypothesis would be: The commercial for the new Meat Man Barbecue claims that it takes 12 minutes for assembly. A Ho:u = 2.5 Ho:p = 0.625 Ho:M = 2.5 Ho:p = 0.625 Ho :p = 0.625 Ho: / = 2.5 consumer advocate thinks that the assembly time is lower than 12 minutes. The advocate surveyed 15 H1 :u # 2.5 H1 :p / 0.625 H1 :u > 2.5 H1:p 0.625 H1:M

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