On how many degrees of freedom will the resulting ?2 test be based? ______ (b) How does the answer in part (a) change if there are 9 campuses rather than 7? ______ (c) How does the answer in part (a) change if there are 5 rather than 3 categories for political philosophy?

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.