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# Situations comparing two proportions are described. In each case, determine whether the situation involves # Situations comparing two proportions are described. In each case, determine whether the situation involves

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Comparing two groups asked 2021-01-27
Situations comparing two proportions are described. In each case, determine whether the situation involves comparing proportions for two groups or comparing two proportions from the same group (1 point each)

a. Compare the proportion of U.S. adults who have a positive opinion about the media versus those who have a negative opinion about the media.

A) Comparing proportions for two groups

B) Comparing two proportions from the same group

b. Compare the proportion of female students at a university who live in a dorm to the proportion of male students at a university who live in a dorm

A) Comparing proportions for two groups

B) Comparing two proportions from the same group

## Answers (1) 2021-01-28
a) here option B is correct. See here we are interested in the proportion of US adults who have positive opinion about media. So here, there is only one group, that is the group of US adults. In this group we are interested in knowing the proportion of individuals who have positive opinion about media. So option B is correct and A is wrong.

b) Here option A is correct. Here we have two group of inviduals: Group 1. Female students of the university. Group 2. Male students of the university. From both the groups we are calculating the proportion of individuals who live in a dorm and then comparing between them. Hence option A is correct and B is wrong.

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