document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=733948>Question 733948</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I am in need of some help, this is my first statistics class and we are in the second week and I currently have a \"D\". My professor is not much help with my questions. Can someone please explain to me How do I solve these questions and Were do I begin? Please and Thank you.\r<BR>\n" );
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document.write( "1.)In the formula for the variance &#931; (x – µ)^2/n, what is the sum if we don’t square the (x - µ) values? [Hint: There is a special name for this sum.]\r<BR>\n" );
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document.write( "2.)Consider the binomial distribution where n = 11 and p = 0.05. <BR>\n" );
document.write( "Find the mean and standard deviation of this binomial distribution.<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 #448679 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=448679\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1.)In the formula for the variance &#931; (x – µ)^2/n, what is the sum if we don’t square the (x - µ) values? [Hint: There is a special name for this sum.]<BR>\n" );
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document.write( "Ans: The sum is always zero.  <BR>\n" );
document.write( "Try it with the set of numbers 1,2,3 and you'll see why it is zero.<BR>\n" );
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document.write( "2.)Consider the binomial distribution where n = 11 and p = 0.05. <BR>\n" );
document.write( "Find the mean and standard deviation of this binomial distribution.<BR>\n" );
document.write( "mean = np = 11*0.05 = 0.55<BR>\n" );
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document.write( "std = sqrt(npq) = sqrt(0.55*0.95) = 72.28..<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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