Question: A random sample of results of a standardized mathematics placement exam for two different campuses is as follows:

Campus Number Mean Std. Deviation

1 330 33 8

2 310 31 7

At the 0.05 significance level, we want to test the claim that the population mean score on Campus 1 is higher than on Campus 2.

A) What is the null and alternative hypotheses for this study? To receive full credit you must write these claims both symbolically AND in English.

B) What is the critical z-value for this test?

C) What is the z-value based on these samples?

D) Is the population mean score on Campus 1 is higher than on Campus 2?