The price of bananas each week in a grocery store is normally distributed with a mean (µ) of 37.8 cents per pound and a standard deviation (σ) is 3 cents.
A. What is the probability that bananas will sell for between 30 and 35 cents per pound in any given week?
B. Mark makes it a policy not to buy bananas unless the price is 33 cents or less per pound. What proportion of the time would he buy bananas?