document.write( "Question 1152965: A small regional carrier accepted 20 reservations for a particular flight with 19 seats. 17 reservations went to regular customers who will arrive for the flight. Each of the remaining passengers will arrive for the flight with a 41% chance, independently of each other.
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\n" ); document.write( "\n" ); document.write( "Find the probability that overbooking occurs.
\n" ); document.write( "Find the probability that the flight has empty seats.
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Algebra.Com's Answer #775141 by Boreal(15235)\"\" \"About 
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overbooking occurs if 3 or 4 show up, which has probability of 4*0.41^3*0.59 for 3 (the binomial formula) 4C3*p^3*(1-p)^1
\n" ); document.write( "and 0.41^4 for all four to show up.
\n" ); document.write( "This is 0.0283+0.1627=0.1910\r
\n" ); document.write( "\n" ); document.write( "Has empty seats means only 1 shows up
\n" ); document.write( "this is 4C1*0.41^1*0.59^3=0.3368
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