document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=431891>Question 431891</A>: <I><SPAN STYLE=\"word-break: break-all;\"> if a fair coin is tossed 100 times, find the mean and the standard deviation for the number of heads. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #299594 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=299594\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "Mean = n * p = 100 * 0.5 = 50 (heads)<BR>\n" );
document.write( "n = NUMBER OF TOSSES<BR>\n" );
document.write( "p = PROBABILITY OF SUCCESS (heads)\r<BR>\n" );
document.write( "\n" );
document.write( "Standard Deviation = SQRT [n * p (1 - p)] = SQRT[ 100 * 50 (1 - 0.5)] = 50\r<BR>\n" );
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document.write( "  </SPAN>\n" );
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