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 ______. Group of answer choices: a. between 0 and 24 minutes b. between 24 and 30 minutes c. between 27 and 33 minutes d. between 27 and 39 minutes

Answer 1

b. between 24 and 30 minutes

Step-by-step explanation:

The standard deviation interval is 27±3, which translates to the interval between 24 and 30, as the limits are the result of the subtraction of one standard deviation (3) from the mean value (27). The standard deviation reflects the interval both in front and behind the mean. If we examined the interval within two standard deviations from the mean, it would be 21 to 33 minutes.