SOLUTION: on average, junior girls own 10 pairs of shoes with a standard deviation of 1.5 shoes. the distribution of shoes follows an approximately normal curve. what is the probability of s

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Question 611707: on average, junior girls own 10 pairs of shoes with a standard deviation of 1.5 shoes. the distribution of shoes follows an approximately normal curve. what is the probability of selecting a junior who owns 12 or more pairs of shoes?
Answer by stanbon(57377) (Show Source):
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on average, junior girls own 10 pairs of shoes with a standard deviation of 1.5 shoes. the distribution of shoes follows an approximately normal curve. what is the probability of selecting a junior who owns 12 or more pairs of shoes?
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z(12) = (12-10)/1.5 = 2/1.5 = 4/3
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P(x >= 12) = P(z >= 4/3) = 0.0912
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Cheers,
Stan H.
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