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xxScarlett

  • 4 years ago

There are 20 students in a class. 12 are girls, 8 are boys. 3 girls like to play softball, 4 boys like to play softball. Find the probability of picking two students from the class and choosing a girl or a softball player. Explain your work.

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  1. iCanHelp
    • 4 years ago
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    Girls 12/20 and Softball Players: 7/20

  2. xxScarlett
    • 4 years ago
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    Since this is a dependent event, shouldn't I multiply both 12/20 and 7/20 to get 21/100?

  3. philips13
    • 4 years ago
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    A = choosing a girl B = choosing a softball player since they are not mutually exclusive events: P(AorB) = P(A) + P(B) - P(AandB) = P(A) + P(B) - P(A)P(B)

  4. phi
    • 4 years ago
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    |dw:1332708681526:dw|

  5. phi
    • 4 years ago
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    That is using pictures to show the sample space

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