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    MR190A's Avatar
    MR190A Posts: 1, Reputation: 1
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    #1

    Dec 3, 2010, 01:39 PM
    what is the probability of a rating between 600 and 775?
    A bank loan officer rates applicants for credit. The ratings are normally disterbuted with a mean of 600 and a standard deviation of 200.
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #2

    Dec 4, 2010, 12:23 AM

    Define first.

    Let X represent the rating of applicant.

    Then,

    Then,

    Replace the values, and find this probability.

    What do you get? :)
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