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I need question below in about 2 hrs 12pm 1. I...




I need question below in about 2 hrs 12pm 1. If the null hypothesis for a goodness-of-fit test predicts no preference, then the researcher should select a sample with an equal number of individuals in each category. (Points: 1) True False 2. In the chi-square test for goodness of fit, the null hypothesis always predicts equal frequencies for all categories. (Points: 1) True False 3. If a chi-square test has df = 1, then (fo - fe)2 will have the same value for every category. (Points: 1) True False 4. In a chi-square test for goodness of fit, the null hypothesis is used to create an ideal, hypothetical sample. The frequencies in the ideal sample are called _____. (Points: 1) expected frequencies theoretical frequencies observed frequencies null frequencies 5. A researcher obtains a value of ?8.50 for a chi-square statistic. What can you conclude because the value is negative? (Points: 1) the observed frequencies are consistently larger than the expected frequencies the expected frequencies are consistently larger than the observed frequencies there are large differences between the observed and expected frequencies The researcher made a mistake. The value of chi-square cannot be negative. 6. The null hypothesis for the chi-square test for independence states that _____. (Points: 1) there is a relationship between the two variables there is no relationship between the two variables both variables have the same frequency distribution the two variables have different frequency distributions 7. A researcher would like to test the claim that 9 out of 10 doctors prefer Brand X. A sample of 60 doctors is obtained and each is asked to compare Brand X with another leading brand. The data show that 48 of the doctors picked Brand X. If these data are evaluated using a chi-square test for goodness of fit, what is the expected frequency for Brand X? (Points: 1) 9 12 48 54 8. A chi-square test for independence has df = 2. What is the total number of categories (cells in the matrix) that were used to classify individuals in the sample? (Points: 1) 2 3 4 6 9. A researcher is examining the relationship between color preferences and gender. A sample of 30 men and 30 women is obtained, and each person is asked to identify his/her preference between two choices of paint colors for a new student lounge. For this sample, 5 of the men preferred color A, and 15 of the women preferred color A. If a chi-square test is used to evaluate the relationship, what is the df value for the chi-square statistic? (Points: 1) 1 3 57 59 10. A researcher is using a chi-square test to determine whether people have any preferences among three brands of televisions. The null hypothesis for this test would state that _____. (Points: 1) there are real preferences in the population one-third of the sample will prefer each brand one-third of the population prefers each brand in the population, one brand is preferred over the other two


Paper#13574 | Written in 18-Jul-2015

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