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Suppose that the scores on a statewide standardized test are normally distributed with a mean of 72 and a standard deviation of 3. Estimate the

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Suppose that the scores on a statewide standardized test are normally distributed with a mean of 72 and a standard deviation of 3. Estimate the percentage of scores that were (a) between 63 and 81. % (b) above 81. % (c) below 66. % (d) between 63 and 78. 9%

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