Mathematics, 11.11.2020 02:20 rosieonwubiko

Mrs. Adam measured the performance times of middle school orchestra 10 points concerts and found a normal distribution. The mean concert time was 48
minutes with a standard deviation of 5.9 minutes. What percentage of
performances last more than 40 minutes? *

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Mrs. Adam measured the performance times of middle school orchestra 10 points concerts and found a...

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