HW 4 soln

# Is there a relationship between student and parent

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b. Is there a relationship between student and parent smoking behavior? Discuss your results briefly- one sentence, that’s all we’ll grade. Include percentages. Yes. Because the conditional probability P(both smoke|student doesn’t smoke) is not equal to P(both smoke| student smoke). 4. 722 randomly selected students in a business school were asked what their major was. Half the students were males and half were females. Females* Major Males* Major Category Accounting Admin Econ Finance Pie Chart of Females, Males vs Major

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a. The pie charts shown above represent what distribution? i. They represent the marginal distribution of gender ii. They represent the marginal distribution of major iii. They represent the conditional distribution of gender given major. iv. They represent the conditional distribution of major given gender. b. Looking at the graphs above, are gender and major independent or dependent? Explain. They are dependent. Given gender is male, the probability that student is in accounting major is higher. So gender and major are dependent. c. Describe the relationship between gender and major using the appropriate percentages. One sentence only – that is all we’ll grade.
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