Question

Your computer checks for new email messages every 15 minutes. If you sit

down at your computer at a random time, what is the probability you will have
to wait more than 5 minutes for the computer to check for new email
messages?
O 1/2
O 1/3
O 1/15
O 2/3

Answer 1

The probability that you will have to wait more than 5 minutes is the same as the probability that you sit down during the first 10 minutes of the 15-minute interval. This probability is:

10 minutes / 15 minutes = 2/3

Therefore, the answer is 2/3.

Explanation: