document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=294602>Question 294602</A>: <I><SPAN STYLE=\"word-break: break-all;\"> suppose 1000 coins are tossed. find the probability of getting the following result. \r<BR>\n" );
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document.write( "exactly 505 heads or more?\r<BR>\n" );
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document.write( "use the normal curve approximation to the binomial distribution (round to 4 decimal places   </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #212416 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=212416\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> suppose 1000 coins are tossed. find the probability of getting the following result. <BR>\n" );
document.write( "exactly 505 heads or more? <BR>\n" );
document.write( "use the normal curve approximation to the binomial distribution (round to 4 decimal places <BR>\n" );
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document.write( "mean = (1/2)1000 = 500<BR>\n" );
document.write( "std = sqrt(1/2*500) = sqrt(250) = 15.81<BR>\n" );
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document.write( "P(504.5 < x < 505.5) = normalcdf(504.5,505.5,500,sqrt(250)) = 0.0240<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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