Quiz 6Statistics 21Spring 2010IbserFor questions 2 and 3 of this quiz, do the hypothesis test that you think is the mostappropriate. Include null and alternative hypotheses as detailed in lecture, a teststatistic (z or t), p-value, and conclusion.1.Vincent is interested in the average math SAT score of all 3,500 seniors at SunshineHigh School. The math SAT score ranges from 200 to 800 points. He surveys asimple random sample of 400 students, and finds that their average score is 710points, with a standard deviation of 60 points.a.The average math SAT score of all 3,500 seniors at Sunshine High School isestimated as ________, and this estimate is likely to be off by _______ or so.b.Vincent correctly constructs an 84% confidence interval for the average mathSAT score of all 3,500 students at SHS. What is the interval? (This intervalwill be referred to as Vincent’s interval throughout this problem.)c.The 84% confidence interval is (about right, not accurate) because_____________________________________________________________________(follows, doesn’t follow) the normal curve.
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