Number of coffee drinks per day

Reference no: EM1394641

Among coffee drinkers, men drink a mean of 3.2 cups per day with a standard deviation of 0.8 cups. assume the number of coffee drinks per day follows a normal distribution.

a) what proportion drink 2 cups 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 the 95th percentile.)

Reference no: EM1394641

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