SOLUTION: Survey 240people consisting of 159boys and remaining girls rated a tv programme as Excellent Good Average. Boys 42Excellent 70Good 47Average Girls 38Excellent 30Good 13Average.

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Question 737180: Survey 240people consisting of 159boys and remaining girls rated a tv programme as Excellent Good Average.
Boys 42Excellent 70Good 47Average
Girls 38Excellent 30Good 13Average.
Quest: If a person is selected at random, what is the probability that he/she
1. rated average given that she is a girl?
2. is a boy given that the rating is Excellent?
Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website!
Survey 240people consisting of 159boys and remaining girls rated a tv programme as Excellent Good Average.
Boys 42Excellent 70Good 47Average
Girls 38Excellent 30Good 13Average.
Quest: If a person is selected at random, what is the probability that he/she
1. P(rated average given that she is a girl) = P(ave and girl)/P(girl)
= (13/240)/(81/240) = 13/81
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2. P(is a boy given that the rating is Excellent) = P(boy and elcell)/P(boy)
= (42/240)/(159/240) = 42/159
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Cheers,
Stan H.
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