document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=360070>Question 360070</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 100 times I draw three cards from 13 to find the experimental probability of no face cards. I get .39 where as I calculated it should be .4196... How do I get the standard deviation and what does this tell me about why my experimental answer differs from my calculated? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #256957 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=256957\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 100 times I draw three cards from 13 to find the experimental probability of no face cards. I get .39 where as I calculated it should be .4196... How do I get the standard deviation and what does this tell me about why my experimental answer differs from my calculated?<BR>\n" );
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document.write( "Std = sqrt(0.4196*0.5804/100) = 0.04935<BR>\n" );
document.write( "z(0.39) = (0.39-0.4196)/sqrt(0.4196*0.5804/100) = -0.6000<BR>\n" );
document.write( "------<BR>\n" );
document.write( "Your experimental result is 0.6 standard deviations below the calculated mean.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.  </SPAN>\n" );
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