A survey of college students was conducted during final exam week to assess the number of cups

Question:

A survey of college students was conducted during final exam week to assess the number of cups of coffee consumed each day. The mean number of cups was 5 with a standard deviation of 1.5 cups. The distribution was normal.

a. What proportion of students drank 7 or more cups of coffee per day?

b. What proportion of students drank 2 or more cups of coffee per day?

c. What proportion of students drank between 2 and 7 cups of coffee per day?

d. How many cups of coffee would an individual at the 60th percentile rank drink?

e. What is the percentile rank for an individual who drinks 4 cups of coffee a day?

f. What is the percentile rank for an individual who drinks 7.5 cups of coffee a day?

Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...