A statistics instructor is interested in the ability of students to assess the difficulty of a...

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A statistics instructor is interested in the ability of students to assess the difficulty of a test they have taken. This test was taken by a large group of students, and the average score was 57.2. A random sample of eight students was asked to predict this average score. Their predictions are shown below. Assuming a normal distribution, test the null hypothesis that the population mean prediction would be 57.2. Use a two-sided alternative and a 5% significance level. 74 81 71 62 61 76 90 85 Click the icon to view the upper critical values of the Student's t distribution. What are the null and alternative hypotheses for this test? OA. H: 557.2 H: > 57.2 OC. Ho: 57.2 H: <57.2 OB. H: 57.2 H: =57.2 D. Ho: =57.2 H: 57.2 A statistics instructor is interested in the ability of students to assess the difficulty of a test they have taken. This test was taken by a large group of students, and the average score was 57.2. A random sample of eight students was asked to predict this average score. Their predictions are shown below. Assuming a normal distribution, test the null hypothesis that the population mean prediction would be 57.2. Use a two-sided alternative and a 5% significance level. 74 81 71 62 61 76 90 85 Click the icon to view the upper critical values of the Student's t distribution. What are the null and alternative hypotheses for this test? OA. H: 557.2 H: > 57.2 OC. Ho: 57.2 H: <57.2 OB. H: 57.2 H: =57.2 D. Ho: =57.2 H: 57.2