Question: Read the following case and answer these questions using a z-test. A psychology department requires applicants to their graduate program to take the GRE as

Read the following case and answer these questions using a z-test. A psychology department requires applicants to their graduate program to take the GRE as part of their admissions process. The quantitative score part of this test has a population mean of 157 with a standard deviation of 9.0. One year, a sample of 45 applicants has a mean quantitative score of 160. The department wants to know if this group of applicants has a higher than average quantitative score. What is your z-statistic? ( 1) - 2.24 O 2) 2.24 ( 3) 6.71 ( 4) 1.34

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