Question: 10. /In the GRE test example (Exercise 9), what if it was believed that the only possible alternative to the null hypothesis is one in

10. /In the GRE test example (Exercise 9), what if it was believed that the only possible alternative to the null hypothesis is one in which the students' GRE scores increase (i.e., they cannot decrease)? a. State the null and alternative hypotheses (H; and H;). b. Make a decision about the null hypothesis. (I) Set alpha (o), identify the critical values, and state a decision rule. Why is the decision rule different in this situation? (2) Calculate a statistic: z-test for one me\\an. Is it a different value in this situation? Why or why not? ' (3) Make 2 decision whether to reject the null hypothesis. (4) Determine the level of significance. . Draw a conclusion from the analysis. ~ d. Whart are the implications of this analysis for the GRE class?

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