document.write( "Question 1028823: Suppose a furniture store found that 20% of the people who enter buy something. Three potential customers walk in. Y means a sale, and N means no sale.
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\n" ); document.write( "1. The probability of at least one sale out of three customers is?
\n" ); document.write( "A) .512 B) .488 C) .6 D) .841\r
\n" ); document.write( "\n" ); document.write( "2. The probability of exactly one sale out three customers is?
\n" ); document.write( " A) .2 B) .141 C) .8 D) .384 E) .128 \n" ); document.write( "
Algebra.Com's Answer #643878 by stanbon(75887)\"\" \"About 
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Suppose a furniture store found that 20% of the people who enter buy something. Three potential customers walk in. Y means a sale, and N means no sale. \r
\n" ); document.write( "\n" ); document.write( "1. The probability of at least one sale out of three
\n" ); document.write( "P(>=1) = 1 - P(none) = 1-(0.8)^3 = 0.488
\n" ); document.write( "A) .512 B) .488 C) .6 D) .841
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\n" ); document.write( "2. The probability of exactly one sale out three customers is?
\n" ); document.write( "A) .2 B) .141 C) .8 D) .384 E) .128
\n" ); document.write( "P(x = 1) = 3C1*0.2*0.8^2 = 3*0.2*0.64 = binompdf(3,0.2,1) = 0.384
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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