A sample of seven compact discs at the music store stated the performance times as lasting the
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A sample of seven compact discs at the music store stated the performance times as lasting the following numbers of minutes for Beethoven’s Ninth Symphony.
66.9 66.2 71.0 68.6 65.4 68.4 71.9
(a) Find the sample median.
(b) Find the sample mean.
(c) Find the sample standard deviation.
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