document.write( "Question 345439: The Transportation Safety Authority (TSA) has developed a new test to detect large amounts of liquid in luggage bags. Based on many test runs, the TSA determines that if a bag does contain large amounts of liquid, there is a probability of 0.92 the test will detect it. If a bag does not contain large amounts of liquid, there is a 0.1 probability the test will conclude that it does (a false positive). Suppose that in reality only 3 in 100 bags actually contain large amounts of liquid. \r
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document.write( "A)What is the probability a randomly selected bag will have a positive test? Give your answer to four decimal places.
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Algebra.Com's Answer #247047 by haileytucki(390) You can put this solution on YOUR website! q1 \n" ); document.write( "P[ +ve ] = P[ large & + ve ] + P[ small & +ve ] \n" ); document.write( "= 2/100 x 98/100 + 98/100 x 10/100 \n" ); document.write( "= [196 + 980] /10^4 \n" ); document.write( "=1176/10^4 \n" ); document.write( "=0.1176\r \n" ); document.write( "\n" ); document.write( "q2 \n" ); document.write( "P[ large | +ve ] = P[large & +ve] / P[+ve] \n" ); document.write( "= 196/1176 \n" ); document.write( "=0.1667\r \n" ); document.write( "\n" ); document.write( "q3 \n" ); document.write( "P[ smll | +ve ] = P[small & +ve] / P[+ve] \n" ); document.write( "= 980/1176 \n" ); document.write( "= 0.8333 \n" ); document.write( " |