document.write( "Question 1172790: If 10% of the television picture tubes burn out before their guarantees has expired:\r
\n" ); document.write( "\n" ); document.write( "(a) What is the probability that a merchant who has sold 100 such tubes will be forced to replace 20 of them?\r
\n" ); document.write( "\n" ); document.write( "(b) What is the probability that he will replace at least 5 and not more than 15 tubes? \n" ); document.write( "

Algebra.Com's Answer #797909 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi  
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document.write( "Binomial Distribution
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document.write( "p(def) = .10, n = 100
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document.write( "P(x = 20) = binompdf(n, p, x-value)= binompdf(100,.10,20) = .0012\r
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document.write( "Recommend using stattrek.com Binomial calculator to check YOUR work.
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document.write( "Wish You the Best in your Studies. \n" );
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