document.write( "Question 1081615: Hi, please help me solve this problem\r
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document.write( "There are 14 boys and 16 girls in Mrs. Kellogg's 4th grade class. A picnic committee of three people is selected at random from the total group of students in the class.\r
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document.write( "a) What is the probability that all the committee members are boys?\r
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document.write( "b) What is the probability that the committee will contain at least one girl?\r
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document.write( "Thanks!! \n" );
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Algebra.Com's Answer #695674 by Alan3354(69443) You can put this solution on YOUR website! There are 14 boys and 16 girls in Mrs. Kellogg's 4th grade class. A picnic committee of three people is selected at random from the total group of students in the class.\r \n" ); document.write( "\n" ); document.write( "a) What is the probability that all the committee members are boys?\r \n" ); document.write( "\n" ); document.write( "b) What is the probability that the committee will contain at least one girl? \n" ); document.write( "----------- \n" ); document.write( "At least 1 girl means 1, or 2 or 3 girls. \n" ); document.write( "P(1 girl) = 1/30 \n" ); document.write( "P(2 girls = (1/30)*(1/29) \n" ); document.write( "P(3 girls = (1/30)*(1/29)*(1/28) \n" ); document.write( "---- \n" ); document.write( "--> P(>=1) = the sum of the 3 P's \n" ); document.write( "=============== \n" ); document.write( "a) What is the probability that all the committee members are boys? \n" ); document.write( "--- \n" ); document.write( "Look at b) \n" ); document.write( "Can you figure it out from that? \n" ); document.write( " |