The weights of packs of chewing gum for a certain brand have a mean of 47.1 grams and a standard deviation 2.4 grams. The weight of a randomly selected pack of gum has a z-score of 3.11. Which of the following statements is the best interpretation of the z-score?
Answer
A
The weight of this pack of gum is lighter than the mean weight by 3.11 standard deviations.
B
The weight of this pack of gum is heavier than the mean weight by 3.11 standard deviations.
C
The weight of this pack of gum is lighter than the mean weight by 2.4 standard deviations.
D
The weight of this pack of gum is heavier than the mean weight by 2.4 standard deviations.