each of the tollowing, state whether a one-proportion z-test or a two-propontion

Question

each of the tollowing, state whether a one-proportion z-test or a two-propontion z-test would be appropriate, and name the populations polling agency takes a random sample to determine the proportion of people in a state who support a certain n agency wants to determine if a certain weight-loss supplement is effective. They perform a survey on people taking the npare their success rate to a sample of people trying to lose weight without supplements supplement, asking if thay successfullylost weight, and z-test would be appropriate. me the population(s). Choose the correct answer below Both the supplement users and people without the supplement People from the state Both supporters and opponents of the proposition from across the country Households z-test would be appropriate. me the population(s). Choose the correct answer below People who want to lose weight People who are overweight Both the supplement users and people without the supplement Both men and women

Explanation / Answer

Answer

(1) it is one proportion z test because there is only proportion of people which is used to test the hypothesis.

Population is the People from the state because the researcher took a sample of people from the state, so people from the state is population

(2) It is two proportion z test because there are two different proportion which are used to test the hypothesis. One proportion for all those people who are using the supplements to lose weight and another proportion for all those people who are trying to lose weight without supplement.

Population is the "people who want to lose weight" because there are people in this population who are trying to lose weight in different ways, but not only using the supplement.

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