Question

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 24 and 30 minutes
b. between 27 and 33 minutes
c. between 27 and 39 minutes
d. between 0 and 24 minutes

Answer 1

a. between 24 and 30 minutes

Step-by-step explanation:

Lower limit: = average time - standard deviation

= 27 - 3 = 24minutes

Upper limit: = average time + standard deviation

= 27 + 3 = 30minutes

Therefore,if a customer were to receive the delivery within one standard deviation from the mean, he would get this pizza between 24 and 30 minutes