Q6 Paul owns a supermarket. He discovered that on average his workers sell 500 pints of milk a
day with a standard deviation of 50 pints.
(a) If the supermarket has 600 pints in stock at the beginning of a day, what is the probability
that it will run out of milk.
(b) How many pints should the supermarket stock if it wants the probability of running out to
be 0.052