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The amount of tomato sauce in an 8 oz. can of tomato sauce has a normal distribution with a mean of
8.15 oz. and a standard deviation of 0.07 oz. Which of the following is the 2-score for 7.90 oz.?

Respuesta :

Answer:

The z-score for 7.90 oz. is -3.57

Step-by-step explanation:

Data

  • mean: 8.15 oz.
  • standard deviation, sd: 0.07 oz.
  • value of interest, x = 7.90 oz.

From definition of z-score:

Z = (x - mean)/sd

Replacing with data:

Z = (7.9 - 8.15)/0.07

Z = -3.57

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