document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1023704>Question 1023704</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Suppose you bet $1 on red at the roulette wheel. There are 18 red numbers and 20 nonred numbers (including the green 0 and 00). You win $1 if a red number comes up, and you lose $1 if any other number comes up. What is your expected value for this wager? (Round your answer to one decimal place.)  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #639161 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=639161\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  Suppose you bet $1 on red at the roulette wheel. There are 18 red numbers and 20 nonred numbers (including the green 0 and 00). You win $1 if a red number comes up, and you lose $1 if any other number comes up. What is your expected value for this wager? (Round your answer to one decimal place.)<BR>\n" );
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document.write( "Random winnings:: +0.....-2.....-1<BR>\n" );
document.write( "Probabilities:: 18/38..20/38..0/38<BR>\n" );
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document.write( "E(x) = [18*0 + 20*-2 + 0*-1]/38 = -40/38 = -$1.05 <BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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