Section_2.5_-_homework_for_2-way_tables[1] - You can ignore...

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Homework for Section 2.5 1. Here is a two-way table showing data from the National Health Interview Survey. The subjects were asked (among other things) whether they had medical insurance or Medicare, and whether they had not been able to afford to get medicine that had been prescribed for them. The numbers are in millions. Could afford medicine Could not afford medicine Totals Insurance Status Insured 156 7 163 Medicare 28 5 33 Uninsured 36 11 47 Totals 220 23 243 So there were 243 million respondents, and about 23 million had been unable to get the medicine they needed, because they could not afford to buy it. a. Identify is the explanatory variable in this data. Identify the response variable. b. Find the conditional distribution of the response variable.
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Unformatted text preview: You can ignore the millions when you find the percents, because they will cancel out when you divide. c. Describe the association between insurance status and ability to afford medicine. 2. The following 2-way table shows the total numbers of men and women who were asked the question: “Are you busy?”, and the total number of “yes” and “no” answers. Are you Busy? Yes No Totals Female 20 Male 30 Totals 25 25 50 1. Fill in the center of the table so that there is no association between sex and being busy. 2. Fill in the center of the table so that the men were more busy than the women. Moral: To see the association, you need to look at the center entries of the table....
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