A popular restaurant advertises that it delivers its orders within 30 minutes. Suppose the average delivery time for one store is 27 minutes with a standard deviation of three minutes. One particular order delivery has a z -score of negative 2 point 1 5 Which of the following statements is not a correct interpretation?
Answer
A
The delivery time was faster than the average delivery time by 2 point 1 5 standard deviations.
B
The delivery time was 2 point 1 5 standard deviations below the average delivery time.
C
The delivery time was less than the average delivery time by 2 point 1 5 standard deviations.
D
The delivery time was slower than the average delivery time by 2 point 1 5 standard deviations.