The average delivery time for a pizza delivery service is 27 minutes with a standard deviation of 3 minutes.If a customer were to receive the delivery within one standard deviation from the mean,he would get this pizza ______.
A)between 0 and 24 minutes
B)between 24 and 30 minutes
C)between 27 and 33 minutes
D)between 27 and 39 minutes

Question

Quizplus · Accepted Answer

One standard deviation from the mean would be plus or minus 3 minutes from the average of 27 minutes. Therefore, the delivery time would be between 24 and 30 minutes (27±3).

The Average Delivery Time for a Pizza Delivery Service Is