document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1011561>Question 1011561</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The following are the numbers of mistakes made in 4<BR>\n" );
document.write( "successive days for 4 technicians working for a<BR>\n" );
document.write( "photographic laboratory: \r<BR>\n" );
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document.write( "tI t2 t3 t4<BR>\n" );
document.write( "5  13  9   8<BR>\n" );
document.write( "13 8  11 11<BR>\n" );
document.write( "9 11  6  7<BR>\n" );
document.write( "10 13 10 10<BR>\n" );
document.write( "Test at the level of significance &#945; = 0.0.5 whether the<BR>\n" );
document.write( "differences among the 4 samples means can be<BR>\n" );
document.write( "attributed to chance </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #627731 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=627731\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  	SS	df	MS	F	p<BR>\n" );
document.write( "Between::14.250	3	4.750	1.422	0.285<BR>\n" );
document.write( "Within:	40.098	12	3.342		<BR>\n" );
document.write( "Total:	54.348	15	<BR>\n" );
document.write( "This was done with the E(x^2)-(E(x))^2<BR>\n" );
document.write( "This makes intuitive sense.  The difference in the means is not great, and with only 4 samples the likelihood of a significant difference would a priori be low.		 </SPAN>\n" );
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