eharrislife9177 eharrislife9177

07-06-2023
Mathematics

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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 σ=40. You want to estimate the mean score within ±1 with 90% confidence. How large an SRS of scores must you choose? Give your answer rounded up to the nearest whole number. n=

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