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Suppose that water usages in American showers are normally distributed, with an average shower using 16.4 gallons, and a standard deviation of 2.9 gallons. Estimate

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Suppose that water usages in American showers are normally distributed, with an average shower using 16.4 gallons, and a standard deviation of 2.9 gallons. Estimate the percentage of showers that used (a) between 13.5 and 19.3 gallons. (b) more than 19.3 gallons. (c) less than 10.6 gallons. (d) between 10.6 and 25.1 gallons. Submit

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