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    Normal distribution

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    The average stock price for companies making up the S&P 500 is $30, and the standard deviation is $8.20. Assume the stock prices are normally distributed.
    a. What is the probability a company will have a stock price of at least $40?
    b. What is probability a company will have a stock price no higher than $20?
    c. How high does a stock price have to be to put a company in the top 10%?

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    https://brainmass.com/statistics/probability/normal-distribution-193702

    Solution Preview

    The average stock price for companies making up the S&P 500 is $30, and the standard deviation is $8.20. Assume the stock prices are normally distributed.

    a. What is the probability a company will have a stock price of at least $40?

    Mean=M= $30.00
    Standard deviation ...

    Solution Summary

    Probability valculations based on normal distribution

    $2.19