409Quiz2 - was 1100. We suspect that this years overall...

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STAT 409 Fall 2009 Name _________________________ Quiz 2 (3 points) Be sure to show all your work, your partial credit might depend on it. No credit will be given without supporting work. 1. At Anytown State University, the population standard deviation of the SAT scores of entering students is 72. Last year’s overall mean SAT score of entering students
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Unformatted text preview: was 1100. We suspect that this years overall mean SAT score is higher. Find the power of the appropriate test at = 1111, if the decision is be based on a random sample of 81 students from this year's class, and a 5% level of significance is used....
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