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Suppose that scores on the mathematics part of the National Assessment of Educational Progress (NAEP) test for eighth-grade students follow a Normal distribution with standard

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Suppose that scores on the mathematics part of the National Assessment of Educational Progress (NAEP) test for eighth-grade students follow a Normal distribution with standard deviation o = 110. You want to estimate the mean score within +10 with 90% confidence. How large an SRS of scores must you choose? Give your answer as a whole number. n =

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