Graded Assignment Back to Assignment Due Sunday 02.25.18 at 11:45 PM Attempts: K
ID: 3050134 • Letter: G
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Graded Assignment Back to Assignment Due Sunday 02.25.18 at 11:45 PM Attempts: Keep the Highest:/12 7. Inference review, problem 7 Aa Aa A professor in the school of business wants to investigate the prices of new textbooks at two different bookstores: IUT and BIS. The professor randomly chooses 15 required texts from IUT and 22 from BIS. In order to test the claim that the average prices at the two bookstores are different, suppose you have calculated the p-value of this test to be .093. The population variances are known. Use a significance level of .1. Which of the following are true for this test? Select all that apply. The test statistic is a z-statistic with no number of degrees of freedom, Ho: The mean at IUT is smaller than the mean at BIS; Hi : The means are the same. Reject Ho, implying that there is insufficient evidence to suggest that the average prices at the two stores are different. The test statistic is a z-statistic with 32 degrees of freedom. Do not reject Ho, implying that there is insufficient evidence to suggest that the average prices at the two stores are different. Ho: The means are the same; H: The means are different. Do not reject Ho, implying that there is significant evidence to suggest that the average prices at the two stores are different. The test statistic is a t-statistic with no number of degrees of freedom. Ho: The mean at IUT is larger than the mean at BIS; Hi : The means are the same. Ho: The means are different; H1: The means are the same. The test statistic is a t-statistic with 32 degrees of freedom. Reject Ho, implying that there is significant evidence to suggest that the average prices at the two stores are different. Fiash Player WIN 28,0,0,361 Q3 3.34.1 2004-2016 Apua. Au nghts reserved Grade It Now Save & ContinueExplanation / Answer
Solution:-
H0 : The means are the same; H1 : The means are different
The test statistics is a t-statistic with 32 degrees of freedom.
Reject H0, implying that there is a significant evidence to suggest that the average prices at the two stores are different.
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