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    use a z-score to calculate probabilites

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    At one university, the distance to students' home is normally distributed with a mean of 200 miles and a standard deviation of 25 miles.

    a. what is the probability of a student living more than 241.25 miles from the school?
    b. what % of students live between 180 and 220 miles from the school?

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    Solution Summary

    The solution shows step-by-step how to use a z-score to calculate probabilities given normally distributed variables (see attachment).