The chi-square goodness-of-fit test provides a method for performing a hypothesis test about the distribution of a variable that has c possible values. If the number of possible values is 2, that is, c = 2, the chi-square goodness-of-fit test is equivalent to a procedure that you studied earlier. a. Which procedure is that? Explain your answer. b. Suppose that you want to perform a hypothesis test to decide whether the proportion of a population that has a specified attribute is different from p0. Discuss the method for performing such a test if you use (1) the one-proportion

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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.