document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=729446>Question 729446</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Q1. A coin has 30% chance to land on head if it is freely tossed. Let X be the number of heads on which it lands in 10 tosses. Find the mean and standard deviation of X.\r<BR>\n" );
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document.write( "I just returned from a deployment and I can't for the life of me remember how to do problems like these.\r<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 #446219 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=446219\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A coin has 30% chance to land on head if it is freely tossed. Let X be the number of heads on which it lands in 10 tosses. Find the mean and standard deviation of X. <BR>\n" );
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document.write( "Binomial Problem with n = 10 and p(heads) = 0.6<BR>\n" );
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document.write( "mean = n*p = 10*0.6 = 6<BR>\n" );
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document.write( "std = sqrt(npq) = sqrt(6*0.4) = sqrt(2.4) = 1.5491<BR>\n" );
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