Bennett & Briggs, Using and Understanding Mathematics, a Quantitative Reasoning Approach 8th ed. (eBook)
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Giving a test to a group of students, the grades and gender are summarized below: A B C Total Male 3 20 10 33 Female 8 12 4 24 Total 11 32 14 57 Let p represent the population proportion of all male students who received a grade of B on this test. Use a 95% confidence interval to estimate p to four decimal places if possible. < p <
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Should p be assumed normal? (a) n = 150, π = .04 Yes No (b) n = 80, π = .40 No Yes (c) n = 175, π = .04 No Yes
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