Question 24 of 25 • SVH #CR Statistical Modeling 25-26
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 –2.15. Which of the following statements is not a correct interpretation?
Answer
A
The delivery time was 2.15 standard deviations below the average delivery time.
B
The delivery time was less than the average delivery time by 2.15 standard deviations.
C
The delivery time was faster than the average delivery time by 2.15 standard deviations.
D
The delivery time was slower than the average delivery time by 2.15 standard deviations.