A process that produces bottles of shampoo, when operating correctly, produces bottles whose contents weigh, on average, 20 ounces. A random sample of nine bottles from a single production run yielded the following content weights (in ounces): 21.4 19.3 19.0 21.6 20.4 20.1 19.1 20.3 20.9

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A: x1 =51.6625 s1 = 7.9277  x2 = 33.6 s2 = 12.2572

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