Random-digit-dialing telephone surveys used to exclude cell phone numbers. If the opinions of people who have only cell phones differed from those of people who have landline service, the poll results may not represent the entire adult population. The Pew Research Center interviewed separate random samples of cell-only and landline telephone users who were less than 30 years old and asked them to describe their political party affiliation.□&nbsp;or goodness of fit, homogeneity or independence?

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Random-digit-dialing telephone surveys used to exclude cell phone numbers. If the opinions of people who have only cell phones differed from those of people who have landline service, the poll results may not represent the entire adult population. The Pew Research Center interviewed separate random samples of cell-only and landline telephone users who were less than 30 years old and asked them to describe their political party affiliation.□&amp;nbsp;or goodness of fit, homogeneity or independence?

Rachettolyf8 · Accepted Answer

Given,Random-digit-dialing telephone surveys used to exclude cell-phone numbers. If the opinions of people who have only cell phones differ from those of people who have landline service, the poll results may not represent the entire adult population. The Pew Research Center interviewed separate random samples of cell-only and landline telephone users who were less than 30 years old and asked them to describe their political party affiliation.When we are interested in the distribution of one variable, then we will use a chi-square goodness-of-fit test.When we are interested in the distribution of two variables in which there are multiple independent samples, then in this scenario we have to use a chi-square test for homogeneity.When we are interested in the distribution of two variables and if there is a single sample, then we would like to use a chi-square test for independence.In this scenario, there are two variables. Type of telephone and political party. There are two random samples of cell-only and landline telephone users. Therefore, we should use Chi-square test for homogeneity.

Random-digit-dialing telephone surveys used to exclude cell phone

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