SOLUTION: Your child is in a 3rd grade class of 15 boys and 16 girls. 10 of the boys love the movie "Star Wars" and 9 of the girls love "Star Wars." What is the probability that a student ch
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-> SOLUTION: Your child is in a 3rd grade class of 15 boys and 16 girls. 10 of the boys love the movie "Star Wars" and 9 of the girls love "Star Wars." What is the probability that a student ch
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Question 427427: Your child is in a 3rd grade class of 15 boys and 16 girls. 10 of the boys love the movie "Star Wars" and 9 of the girls love "Star Wars." What is the probability that a student chosen at random is a girl or loves "Star Wars?" Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Your child is in a 3rd grade class of 15 boys and 16 girls.
10 of the boys love the movie "Star Wars" and
9 of the girls love "Star Wars."
What is the probability that a student chosen at random is a girl or loves "Star Wars?"
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P(girl or loves SW) = P(girl)+P(loves SW)- P(girl and loves SW)
= 16/31 + 19/31 - 9/31
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= 26/31
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Cheers,
Stan H.
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