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20 November, 15:54

X is a normally distributed random variable with mean 62 and standard deviation 18.

What is the probability that X is between 44 and 80?

Write your answer as a decimal rounded to the nearest thousandth.

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Answers (1)
  1. 20 November, 16:30
    0
    0.683

    Step-by-step explanation:

    If you have a calculator with statistical functions, this work is especially straightforward.

    On the calculator, type in

    normcdf (44,80,62, 18)

    The calculator returns the result (probability) 0.683
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