Question

Among coffee drinkers, men drink a mean of 3.8 cups per day with a standard deviation of 0.7 cups. Assume the number of cups per day follows a normal distribution. (use appendix tables 1 & 1a) (round answers to 4 decimal places)What proportion of men drinks 2 cups per day or more?What proportion drinks not more than 4 cups per day?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?If a sample of 30 men is selected, what is the 90th percentile of the mean number of cups per day?

Answer 1

Answer:

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