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What proportion of coffee drinkers

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Among coffee drinkers, women drink on average 2 cups per day (mean=2) with a standard deviation sd= 0.5 cups. Assume the X= number of cups per day, X follows a normal distribution, and thus Z = x- mean/ SD.

What proportion of coffee drinkers have 3 or more cups per day?

Reference no: EM132168172

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