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6 January, 07:35

Use technology or a z-score table to answer the question.

The number of baby carrots in a bag is normally distributed with a mean of 94 carrots and a standard deviation of 8.2 carrots.

Approximately what percent of the bags of baby carrots have between 90 and 100 carrots?

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  1. 6 January, 07:45
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    Answer: 46%

    Step-by-step explanation:

    Since the number of baby carrots in a bag is normally distributed, we would apply the formula for normal distribution which is expressed as

    z = (x - µ) / σ

    Where

    x = the number of baby carrots in the bag.

    µ = mean

    σ = standard deviation

    From the information given,

    µ = 94 carrots

    σ = 8.2 carrots

    The probability that a bag of baby carrots have between 90 and 100 carrots is expressed as

    P (90 ≤ x ≤ 100)

    For x = 90,

    z = (90 - 94) / 8.2 = - 0.49

    Looking at the normal distribution table, the probability corresponding to the z score is 0.31

    For x = 100,

    z = (100 - 94) / 8.2 = 0.73

    Looking at the normal distribution table, the probability corresponding to the z score is 0.77

    Therefore,

    P (90 ≤ x ≤ 100) = 0.77 - 0.31 = 0.46

    The percent of the bags of baby carrots that have between 90 and 100 carrots is

    0.46 * 100 = 46%
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