document.write( "Question 507256: A shipment of 9 typewriters contains 3 that are defective.Find the probability that a sample of size four, drawn from the nine, will not contain a defective typewriter. \n" ); document.write( "
Algebra.Com's Answer #340408 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! A shipment of 9 typewriters contains 3 that are defective.Find the probability that a sample of size four, drawn from the nine, will not contain a defective typewriter. \n" ); document.write( "----- \n" ); document.write( "Binomial Problem with n = 4 and P(defect) = 1/3 : p(no defect) = 2/3 \n" ); document.write( "------- \n" ); document.write( "P(4 will not contain a defective) = 1 - P(all good) = 1 - 6C4/9C4 \n" ); document.write( "--- \n" ); document.write( "= 1 - 0.1190 \n" ); document.write( "--- \n" ); document.write( "= 0.8810 \n" ); document.write( "=============== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "=============== \n" ); document.write( " |