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    Calculation of probability based on normal distribution

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    The number of shark attacks per year in the US is distributed approximately normal, with a Variance of 31.8 and a standard deviation of 10.

    A) Determine the number of shark attacks per year that separate the top 2% from the bottom 98 %

    B) Determine the number of shark attacks per year that constitute the middle 80% of shark attacks per year.

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    https://brainmass.com/statistics/probability/calculation-probability-based-normal-distribution-353155

    Solution Preview

    Probability problem...
    The number of shark attacks per year in the US is distributed approximately normal, with a Variance Mean of 31.8 and a standard deviation of 10.

    A) Determine the number of shark attacks per year that seperate the ...

    Solution Summary

    This solution gives the step by step method for computing probabilities based on Z score.

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