Question

1. Assume that we are talking about all students at your college a. Which group is larger: Students who are currently taking English AND math, or students who are currently taking English? b. Which group is larger: Students who are taking English OR math, or students who are taking English? 2. Suppose a person is selected at random. Label each pair of events as mutually exclusive or not mutually exclusive. a. The person is a parent; the person is a toddler b. The person is a woman; the person is a CEO (chief executive oficer). 3. The percentage of left-handed people in the United States is estimated to be 10% Men are about twice as likely to be left-handed as women. Are gender and handedness independent or associated? Explain. 4, A survey published in Vitality Magazine suggested that 67% of women in the United States thought shopping was relaxing and enjoyable, but only 37% of men felt that way. Assuming these values are accurate, state whether or not gender and opinion about shopping are independent. Explain. 5. According to the National Highway Traffic Safety Administration, the rate of seat belt use in the United States for 2009 was 84%. Suppose that you looked at two people, selected randomly and independently from the population, to see whether each had his or her seat belt fastened in 2009. a. What is the probability that neither person had her or his belt fastened? What is the probability that at least one person had her or his belt fastened? b. Items 6 10 use the following scenario: The table summarizes results from a GSS survey that asked about political party affiliation and self-described political orientation. A person is selected randomly from the sample summarized in the table. Liberal Moderate Conservative Total Other Tota 530 735 593 689469 700 1858 Dem Rep 306 279 104 26 134 309 180 6. Find the probability that a conservative person is a Democrat. 7. Find the probability that the person is a moderate Republican 8. What percentage of the liberals are Democrats? at percentage of the conservatives are Democrats? 10. Which respondents are more likely to be Democrats: the liberal or the conservative respondents?

I need help with setting up the problem, as well as learning how to use the calculator. I have a TI-83 plus

Answer 1

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