SOLUTION: Among coffee drinkers, men drink a mean of 3.2 cups per day with a standard deviation of 0.8 cups. What proportion drinks no more than 4 cups per day?

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Question 1164556: Among coffee drinkers, men drink a mean of 3.2 cups per day with a standard deviation of 0.8 cups.
What proportion drinks no more than 4 cups per day?

Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
z=(x-mean)/sd
z<(4-3.2)/0.8 =1
z<1 probability of 0.8413