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Math Help - Need some help with Probabilty

  1. #1
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    Need some help with Probabilty

    I've succeded to solve a) but I don't get b) + c)



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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by kevin3000 View Post
    I've succeded to solve a) but I don't get b) + c)



    b) What is the total number of days with 0, 1, 2 or 3 absentees? So the remaining days (of the 100 observed) had more than 3 absentees. The required probability is this latter number of days divided by 100.

    c) Add up the number of days that had the specified number of absentees (0, 1 or 2 absentees) and divide by 100.

    CB
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