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23 August, 08:27

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.?

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  1. 23 August, 08:46
    0
    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 dа ta:

    Z = (7.9 - 8.15) / 0.07

    Z = - 3.57
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