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    nbaroff's Avatar
    nbaroff Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Nov 7, 2010, 03:08 PM
    finite math help?
    Assume that 20 percent
    of students have taken calculus in high school. Of those who have
    taken calculus in high school, 65 percent
    plan to major in science. Of those who did not take calculus in high school,
    only 25 percent plan to major in science.



    What is the probability that a randomly selected student
    plans to major in science?
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
    Uber Member
    		  
    #2

    Nov 7, 2010, 10:32 PM

    Draw a probability tree to help you.

    Then, the probability that a student planning to major in science is given by:
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