document.write( "Question 1015137: assume that a certain company was producing a bottles of soft drinks it is known that the probablity that the company produce a defective bottles was 0.15.If 10 bottles produced by the company were selected randomly find the probablity that at least two bottles of soft drink is defective? \n" ); document.write( "

Algebra.Com's Answer #631475 by Boreal(15235) $\"\"$ $\"About$

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at least 2 bottles:
\n" ); document.write( "find probability of 0, 1. You don't want that, but if you subtract that value from 1, you will get what you do want.
\n" ); document.write( "probability of 0 is 0.85^10, because that means all are not defective.
\n" ); document.write( "p(0)=0.1969
\n" ); document.write( "p(1)=10 ways it can happen*(0.85^9)(0.15)^1
\n" ); document.write( "=0.3474
\n" ); document.write( "The sum of p(0) and p(1)=0.5443
\n" ); document.write( "At least 2 bottles are defective is 1-0.5443 or 0.4557.
\n" ); document.write( "This is easier than computing the nine probabilities from p(2) to p(10), although the last few will be essentially 0. \n" ); document.write( "

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