document.write( "Question 473930: Help!\r
\n" ); document.write( "\n" ); document.write( "A shipment of 11 televisions contains 4 regular and 7 deluxe models. The manufacturer failed to mark the model designation on the cartons. If 3 cartons are selected at random, what is the probability that exactly 2 of them are the deluxe model? (to three decimal places.)
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Algebra.Com's Answer #325061 by ccs2011(207)\"\" \"About 
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Use Binomial Distribution
\n" ); document.write( "\"P+=+nCx+%2A+p%5Ex+%2A+%281-p%29%5E%28n-x%29\"
\n" ); document.write( "where n is total items, x is number of desired items, p is probability of selecting a desired item.
\n" ); document.write( "For this problem:
\n" ); document.write( "n = 3
\n" ); document.write( "x = 2
\n" ); document.write( "p = 7/11
\n" ); document.write( "\"P+=+3C2+%2A+%287%2F11%29%5E2+%2A+%284%2F11%29%5E1\"
\n" ); document.write( "\"P+=+3%2A%2849%2F121%29%2A%284%2F11%29\"
\n" ); document.write( "\"P+=+0.44177\"
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