+ 15 points My Notes Suppose that, in a recent health survey, 500 randomly selec

Question

+ 15 points My Notes Suppose that, in a recent health survey, 500 randomly selected US adult citizens were asked a series of questions regarding their health and their financial status. The answers provided by the respondents allow the investigators to categorize each one into a health level and a socioeconomic class. A contingency table summarizing the results of this survey is provided below Assume that this is a representative sample of US adults and that the answers provided were truthful. (For the two multiple choice questions you have two attempts each) Health Assessment Social Class Poor Fair Good Excellent PovertyY Working Middle Upper 18 18 16 0 36 42 103 23 35 52 62 39 6 8 24 18 A) In this study the Health Assessment variable is:Select Consider that you randomly select one of these records from the 500 responses; use the results published in Table 1, above, to find the following probabilities Note: You may answer in fraction (n/d) form. If you compute a decimal answer, use at least 3-decimal precision B) P(Poor Health) = C) P(Upper Class) - D) P(Poor HealthI Poverty Class)- E) P(Poor Health|Upper Class) Does it appear that social class and health are dependent? No, social class and health appear independent because the marginal probability of poor health is roughly the same as the marginal probability of upper class. No, social class and health appear independent because the marginal probability of poor health is roughly equal to the conditional probabilities of poor health given poverty or upper class. No, social class and health appear independent because correlation does not imply causation. Yes, social class and health appear dependent because the marginal probability of poor health is considerably different from the marginal probability of poverty. O Yes, social class and health appear dependent because the marginal probability of poor health is considerably different from the conditional probabilities of poor health given poverty or upper class Yes, social class and health appear dependent because the data show significant evidence that health assessment determines your social class.

Explanation / Answer

A) Categorical Variable

B) 95/500 (Poor column in health assessment)/total of all rows

c)56/500 (Upper-class row )/total of all rows

d) 18/500 (Poor health as well as poverty class) / total

e) 6/500 (Poor health as well as Upper class ) /total

thanks :)

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