document.write( "Question 574442: 7.Ten percent of the items produced by a machine are defective. Out of 15 items chosen at random, [20 Marks]
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\n" ); document.write( "b. what is the probability that less than 3 items will be defective?
\n" ); document.write( "c. what is the probability that exactly 11 items will be non-defective?
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Algebra.Com's Answer #369092 by stanbon(75887)\"\" \"About 
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Ten percent of the items produced by a machine are defective. Out of 15 items chosen at random,
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\n" ); document.write( "Binomial Problems with n = 15 and p(defective) = 0.1 ; p(not defective) = 0.9
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\n" ); document.write( "a. what is the probability that exactly 3 items will be defective?
\n" ); document.write( "P(x = 3) = 15C3(0.10^3*(0.9)^12 = binompdf(15,0.1,3) = 0.1285
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\n" ); document.write( "b. what is the probability that less than 3 items will be defective?
\n" ); document.write( "P(0<= x <=2) = binomcdf(15,0.1,2) = 0.8159
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\n" ); document.write( "c. what is the probability that exactly 11 items will be non-defective?
\n" ); document.write( "P(x = 11) = 15C11*0.1^11*0.9^4 = binompdf(15,0.1,11) = 0.00000000896
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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