document.write( "Question 613650: Approximately 80% of American households have a computer. 9 households are randomly selected.
\n" ); document.write( "a) What is the probability at least 6 households have a computer?\r
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\n" ); document.write( "\n" ); document.write( "b) What is the probability at most 3 households have a computer?\r
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\n" ); document.write( "\n" ); document.write( "A stockbroker gains 3 new accounts, on average, in a week’s time. What is the probability that he gains 15 new accounts in the next 4 weeks?
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Algebra.Com's Answer #386207 by ewatrrr(24785)\"\" \"About 
You can put this solution on YOUR website!
 
\n" ); document.write( "Hi
\n" ); document.write( "Approximately 80% of American households have a computer. 9 households are randomly selected.
\n" ); document.write( "Using Stattrek.com Binomial Calculator
\n" ); document.write( "P(at least 6) = .9144
\n" ); document.write( "P(at most 3) = .0031
\n" ); document.write( "A stockbroker gains 3 new accounts, on average, in a week’s time.
\n" ); document.write( "What is the probability that he gains 15 new accounts in the next 4 weeks
\n" ); document.write( "Using Stattrek.com Poison Probablity Calculator
\n" ); document.write( " P(15;12) = .0724 \n" ); document.write( "
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