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The mean height of the sopranos is 64.5 inches, the mean height of the altos is 65.2 inches, the mean height of the tenors is 69.6 inches, and the mean height of the basses is 70.2 inches. The tenors and the basses tend to be the tallest singers, on average. b. Each of the data sets is roughly symmetric, so the standard deviation or ... ................
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