document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1132696>Question 1132696</A>: <I><SPAN STYLE=\"word-break: break-all;\">  An airline charges the following baggage fees: $25 for the first bag and $35 for the second. Suppose 54% of passengers have no checked luggage, 34% have only one piece of checked luggage and 12% have two pieces. We suppose a negligible portion of people check more than two bags.\r<BR>\n" );
document.write( "\n" );
document.write( ") The average baggage-related revenue per passenger is: $ <BR>\n" );
document.write( " (please round to the nearest cent) \r<BR>\n" );
document.write( "\n" );
document.write( "b) The standard deviation of baggage-related revenue is: $ <BR>\n" );
document.write( " (please round to the nearest cent) \r<BR>\n" );
document.write( "\n" );
document.write( "c) About how much revenue should the airline expect for a flight of 120 passengers? $ <BR>\n" );
document.write( " (please round to the nearest dollar)  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #749826 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=749826\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x*p(x)<BR>\n" );
document.write( "0*.54=0<BR>\n" );
document.write( ".34*25=$8.50<BR>\n" );
document.write( ".12*60=$7.20<BR>\n" );
document.write( "The expected value is this sum or $15.70  per passenger<BR>\n" );
document.write( "For 120 passengers, the expected value is 120*$15.70 or $1884\r<BR>\n" );
document.write( "\n" );
document.write( "the variance is -15.70^2*0.54=133.10<BR>\n" );
document.write( "plus (25-15.70)^2*0.34=29.41<BR>\n" );
document.write( "plus (60-15.70)^2*0.12=235.50<BR>\n" );
document.write( "These add to 398.01 $^2<BR>\n" );
document.write( "sqrt of this is the sd or $19.95 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );