One question in the General Social Survey asks, “Do you think that it should be government’s responsibility to reduce income differences between the rich and the poor?”  Those answering yes in a recent survey included 90 of the 142 respondents who called themselves “strong Democrat” in political party identification and 26 of the 102 who called themselves “strong Republican.”   Question: Find the point estimate (n) of the proportion answering yes for each group. What is the point estimate for strong Democrat and strong Republicans

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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.