Question

Ten is the average number of oil tankers arriving each day at a certain port. The facilities at the

port can handle at most 15 tankers per day. What is the probability that on a given day tankers have to be
turned away?

Answer 1

If 10 is the average then 10 each side would be 20

so that 15 fits into 20 at 3/4

1- 3/4 = 1/4

So the answer is 1/4

Explanation: