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

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