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9 2 1 Perform hypothesis tests 17 7 points Example Hypothesis Test A College Board...

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9 2 1 Perform hypothesis tests 17 7 points Example Hypothesis Test A College Board study suggests that coached students taking the SAT should have a mean score of approximately 525 A teacher who runs an online coaching program thinks that students coached by his method have a higher score than this Because the teacher believes that the mean score for his students is greater than 525 the null and alternate hypotheses are Ho 525 versus H 525 Suppose now that the teacher draws a random sample of 150 students that went through his program and their mean SAT score was X 558 Can the teacher reject and conclude that the mean of all students who go through his program will be greater than 525 H Left tailed Right tailed Two tailed Significance Level a 0 02 2 054 2 054 2 326 0 10 0 05 1 282 1 645 1 282 1 645 1 96 1 645 0 01 2 326 2 326 2 576

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