Posted by **irene** on Tuesday, September 17, 2013 at 9:26pm.

The international bottled water association says that Americans on the average drink 4.6 (8oz) servings of water a day. Assume that the number of 8oz. servings of water is approximately normally distributed with a standard deviation of 1.8 servings what proportion of Americans drink more than the recommended 8 servings?

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