document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1192283>Question 1192283</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Determine the mean (μx̅), variance (σ2\r<BR>\n" );
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document.write( "x̅), and standard deviation (σx̅). \r<BR>\n" );
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document.write( "a. A random sample of size 4 is taken with replacement from a population with <BR>\n" );
document.write( "μ = 12 and σ2 = 8<BR>\n" );
document.write( "b. A random sample of size 64 taken from a population from a population of 1200 whose μ=<BR>\n" );
document.write( "72.12 and σ2= 12 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #824202 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=824202\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a. mean is 12, sd is sqrt(8)/2 or sqrt(2)<BR>\n" );
document.write( "b. mean 72.12, sd is sqrt(12)/8 or sqrt(3)/4\r<BR>\n" );
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document.write( "variance in pop is 8, so variance in sample is 8/4 or 2 and the sd is sqrt(2)<BR>\n" );
document.write( "variance in pop is 12, so variance in sample of size 64 is 12/64 and sd is 2 sqrt(3)/8 or sqrt(3)/4. </SPAN>\n" );
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