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Suppose that the scores on a statewide standardized test are normally distributed with a mean of 63 and a standard deviation of 3. Estimate the

Suppose that the scores on a statewide standardized test are normally distributed with a mean of 63 and a standard deviation of 3. Estimate the percentage of scores that were (a) between 54 and 72. % (b) above 66. % (c) below 57. % (d) between 57 and 72. %

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