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The annual per capita consumption of bottled water was 30.9 gallons. Assume that the per capita...

The annual per capita consumption of bottled water was 30.9 gallons. Assume that the per capita consumption of bottled water is approximately normally distributed with a mean of

30.9 and a standard deviation of 11 gallons.

a) What is the probability that someone consumed more than 36 gallons of bottled​ water?

b) What is the probability that someone consumed between 20 and 30 gallons of bottled​ water?

c) What is the probability that someone consumed less than 20 gallons of bottled​ water?

d. 99​% of people consumed less than how many gallons of bottled​ water?

Math   Statistics-And-Probability   
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