document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=730640>Question 730640</A>: <I><SPAN STYLE=\"word-break: break-all;\"> how can i solve this quiz?<BR>\n" );
document.write( "Flipping a fair coin 4 times. We win x euros when we bring x crowns unless we bring a single crown so not winning anything.\r<BR>\n" );
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document.write( "On average how many euros to win this game? (find the expected value)\r<BR>\n" );
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document.write( "i will use E(X)=np?<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #446763 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=446763\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Flipping a fair coin 4 times. We win x euros when we bring x crowns unless we bring a single crown so not winning anything. <BR>\n" );
document.write( "On average how many euros can you expect to win? (find the expected value) <BR>\n" );
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document.write( "# of crowns:::::::::::::  0.......1.......2........3........4<BR>\n" );
document.write( "Random winning values:::  0.......0.......2........3........4<BR>\n" );
document.write( "Probabilities::::::::::::1/16.....4/16...6/16.....4/16.....1/16\r<BR>\n" );
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document.write( "E(x) = [0 + 0 + 12 + 12 + 4]/16 = 28/16 = 1.75 euros\r<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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