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Mathematics, 07.12.2019 05:31 skyless
Aresearcher used a sample of n = 60 individuals to determine whether there are any preferences among six brands of pizza. each individual tastes all six brands and selects his/her favorite. if the data are evaluated with a chi-square test for goodness of fit using α = .05, then how large does the chi-square statistic need to be to reject the null hypothesis?
7. a chi-square test for goodness of fit is used to examine the distribution of individuals across four categories, and a chi-square test for independence is used to examine the distribution of individuals in a 2×2 matrix of categories. which test has the larger value for df?
8. a sample of 100 people is classified by gender (male/female) and by whether or not they are registered voters. the sample consists of 80 females and 20 males, and has a total of 60 registered voters. if these data are used for a chi-square test for independence, what is the total number of females for the expected frequencies?
9. what is stated by the null hypothesis for the chi-square test for independence?
10. a chi-square test for independence is being used to evaluate the relationship between two variables, one of which is classified into 3 categories and the second of which is classified into 4 categories. the chi-square statistic for this test would have df equal to
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