document.write( "Question 1172532: In a survey of companies in the sector of small industries, it was found that only 50% of those companies that obtained ISO certificate are found successful and only 30% of those companies that did not applied for this certificate are unsuccessful. The survey reveals that 80% of the companies in the sector obtained ISO certificate.
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Algebra.Com's Answer #797598 by ewatrrr(24785)\"\" \"About 
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In a survey of companies in the sector of small industries, it was found that only 50% of those companies that obtained ISO certificate are found successful and only 30% of those companies that did not applied for this certificate are unsuccessful. The survey reveals that 80% of the companies in the sector obtained ISO certificate.
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document.write( "Hi  
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document.write( "	0.8(ISO)				0.2 (no ISO)	
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document.write( "0.50		0.50		            0.70		0.30
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document.write( "successful	not successful		successful		not successful\r
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document.write( "a. If a company is selected at random, what is the probability that it is a successful company
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document.write( "P = .80(.50) + .20(.70)
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document.write( "P = .40 + .14 = .54
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document.write( "b. If a company is selected at random and found unsuccessful, what is the probability that it did not get the ISO certificate?
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document.write( "P(A|B) = P(A and B)/P(B)
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document.write( "P(noISO|unsuccessful) = .06/.46 = .130
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document.write( "Wish You the Best in your Studies.
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