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The mean playing time for a large collection of music CDs is 32 minutes and...

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The mean playing time for a large collection of music CDs is 32 minutes and the standard deviation is 6 minutes a What value in minutes is 1 standard deviation above the mean One standard deviation below the mean What values are 2 standard deviations away from the mean 1 standard deviation above the mean 1 standard deviation below the mean 2 standard deviations above the mean 2 standard deviations below the mean min min min min b Assume that the distribution of times is mound shaped and approximately symmetric Hint See Example 3 19 Use the Empirical Rule Approximately what percentage of times are between 20 and 44 minutes Approximately what percentage of times are less than 14 min or greater than 50 min Approximately what percentage of times are less than 14 min

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