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Math Help - Probability, please help

  1. #1
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    Probability, please help

    Department Badminton Squash Tennis Others Not Interested Total
    Building 56 75 21 35 45 232
    Business Studies 76 34 58 21 87 276
    Electrical 43 68 34 71 22 238
    Electronic 27 54 28 49 39 197
    Mechanic 84 59 31 46 31 251
    Total 286 290 172 222 224 1194

    The students are not allowed to indicate more than One sport.

    a) If a student is selected at random, what is the probability that the student
    iii) Comes from the Business studies or the Electrical Department

    b) If a student is selected at random prefers to play tennis, what is the probability that the student
    i) Comes from Mechanical department
    ii) Comes from either the building or electrical department

    c) Additional information that 45% of the total student population are female and 23% of them are Not Interest
    If a student selected at random is known to have been taken part at least 1 sport, what is the probability that the student is Female?
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  2. #2
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    Feb 2008
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    Sorry Table not clear

    Here is the table for the question above
    Attached Thumbnails Attached Thumbnails Probability, please help-table.bmp  
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