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The annual per capita consumption of bottled water was 30.5 gallons. Assume that the per capita consumption of bottled water is approximately normally distributed with

The annual per capita consumption of bottled water was 30.5 gallons. Assume that the per capita consumption of bottled water is approximately normally distributed with a mean of 30.5 and a standard deviation of 10 gallons.

a. What is the probability that someone consumed more than 31 gallons of bottledwater?

b. What is the probability that someone consumed between 20 and 30 gallons of bottledwater?

c. What is the probability that someone consumed less than 20 gallons of bottledwater?

d. 90% of people consumed less than how many gallons of bottledwater?

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