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Math Help - finite math help.. problem solving

  1. #1
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    finite math help.. problem solving

    Consider the following table that categorizes the injuries that occured in one season in a particular hockey league. The table shows which injuries happened to someone wearing a half face shield versus a full face shield.

    H=Half shield
    F=Full Shield
    T=Totals

    (H) (F) (T)
    Head or face injury only (A) 95 34 129
    Neck injury only (B) 41 38 79
    Body injury only (C) 9 7 16
    Multiple injuries 202 150 352
    Totals 347 229 576


    (a) Calculate the probability that a randomly selected injured person from those represented in the table had only a neck injury.
    (b) What is the probability that an injury that occurred to someone wearing a full shield resulted in only a neck injury?
    (c) Determine whether the events F and B (as shown in the table) are independent.

    would a) be the total injuries choose neck injuries?

    is my thinking right here? then B would be fullshield neck injury from the total??
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  2. #2
    Member
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    Quote Originally Posted by davidbooth View Post
    Consider the following table that categorizes the injuries that occured in one season in a particular hockey league. The table shows which injuries happened to someone wearing a half face shield versus a full face shield.


    H=Half shield
    F=Full Shield
    T=Totals

    (H) (F) (T)

    Head or face injury only (A) 95 34 129
    Neck injury only (B) 41 38 79
    Body injury only (C) 9 7 16
    Multiple injuries 202 150 352

    Totals 347 229 576


    (a) Calculate the probability that a randomly selected injured person from those represented in the table had only a neck injury.
    (b) What is the probability that an injury that occurred to someone wearing a full shield resulted in only a neck injury?
    (c) Determine whether the events F and B (as shown in the table) are independent.

    would a) be the total injuries choose neck injuries?

    is my thinking right here? then B would be fullshield neck injury from the total??
    a) (total number of neck only)/(total number of injuries)=79/576

    .
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  3. #3
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    Feb 2009
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    hi. i have the same question to do and i dont understand how to start or do any of it. please help!
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