document.write( "Question 199933: Sixty percent of the customers of a fast food chain order a hamburger, french fries and a drink. If a random sample of 15 cash register receipts is selected, what is the probability that 10 or more will show that the above three food items were ordered? \n" ); document.write( "
Algebra.Com's Answer #150362 by edjones(8007)\"\" \"About 
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Let a=.6 and b=.4
\n" ); document.write( "Take the 1st six terms of (a+b)^15 which are
\n" ); document.write( "find the coefficients by the combination formula nCr on your calculator (easiest).
\n" ); document.write( "a^15=.0005
\n" ); document.write( "15a^14b=.0047
\n" ); document.write( "105a^13b^2=.0219
\n" ); document.write( "455a^12b^3=.0634
\n" ); document.write( "1365a^11b^4=.1268
\n" ); document.write( "3003a^10b^5=.1859
\n" ); document.write( "Sum of the above numbers .4032 answers.
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