document.write( "Question 339740: 4. The probability that an adult male is shorter than 66 inches is 0.3; that he is between 66 and 70 inches is 0.5; and that he is taller than 70 inches is 0.2. If two males are picked at random, find the probability that:\r
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document.write( "a. the heights of both are between 66 and 70 inches.\r
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document.write( "b. the first is shorter than 66 inches and the second is taller than 70 inches.\r
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document.write( "c. the first is 70 inches or shorter and the second is 66 inches or taller.\r
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Algebra.Com's Answer #243379 by jrfrunner(365)![]() ![]() You can put this solution on YOUR website! a. Probability the heights of both are between 66 and 70 inches \n" ); document.write( "P((both between 66 and 70)= \n" ); document.write( "---\r \n" ); document.write( "\n" ); document.write( "b. probability the first is shorter than 66 inches and the second is taller than 70 inches. \r \n" ); document.write( "\n" ); document.write( "P(x<66 and y>70)=P(x<66)P(>70)=0.3*0.2=0.06 \n" ); document.write( "-- \n" ); document.write( "c. probabilitythe first is 70 inches or shorter and the second is 66 inches or taller \n" ); document.write( "P(x<70 and y>66)=P(x<70)P(>66)=(0.3+0.5)*(0.5+0.2)=0.8*0.7=0.56 \n" ); document.write( " |