Among coffee drinkers men drink a mean of 3.2 cups per day with a standard deviation of 0.8 cup. Assume the number of cups per day follows a normal distribution  a) what proportion drink 2 cup per day or more? b) what proportion drink no more than 4 cups per day? c) if the top 5% of coffee drinkers are considered heavy coffee drinkers what is the minimum number of cups consumed by a heavy coffee drinker? Hint: find 95 percentile

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Among coffee drinkers men drink a mean of 3.2 cups per day with a standard deviation of 0.8 cup. Assume the number of cups per day follows a normal distribution 

a) what proportion drink 2 cup per day or more?

b) what proportion drink no more than 4 cups per day?

c) if the top 5% of coffee drinkers are considered heavy coffee drinkers what is the minimum number of cups consumed by a heavy coffee drinker? Hint: find 95 percentile

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