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    Quantative Analysis of Data: Normal Random Variable

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    Suppose that a stock is currently selling for $100. The change in the stock's price during the nest year follows a normal random variable with a mean of $10 and a standard deviation of $20. What is the probability (rounded to the nearest hundredth) that the stock will sell for at least $120 in a year's time?

    a. .31
    b. .16
    c. .25
    d. .35
    e. .40

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    https://brainmass.com/statistics/quantative-analysis-of-data/quantative-analysis-data-normal-random-variable-391691

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