document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1047237>Question 1047237</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hi Can someone please check my work?  I am having trouble understanding confidence intervals and I am not sure if I am on the right track. \r<BR>\n" );
document.write( "\n" );
document.write( "4.	How much do adult male lions weigh? Six adult males were captured, tagged and here are their weights:<BR>\n" );
document.write( "	480, 580, 470, 510, 390, 550\r<BR>\n" );
document.write( "\n" );
document.write( "a.	What is the point estimate for the population mean? 2980/6 ---->   µ = 496.7<BR>\n" );
document.write( "b.	Construct at 90% confidence interval for the population average weight of all adult male grizzly bears in the wild.<BR>\n" );
document.write( "			S x-bar = 27.2709<BR>\n" );
document.write( "		 	Df  6-1=5<BR>\n" );
document.write( "			t=2.0150<BR>\n" );
document.write( "                        = x-bar ± (t * Standard error) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #662741 by </B><A HREF=/tutors/aboutme.mpl?userid=ewatrrr><B>ewatrrr(24785)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ewatrrr><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=ewatrrr><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=662741\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a.	What is the point estimate for the population mean? <BR>\n" );
document.write( "2980/6 ----> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28x-bar%29 ALIGN=MIDDLE  ALT=\"highlight%28x-bar%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >  = 496.7 (to the nearest tenth, yes)<BR>\n" );
document.write( "<u>mean and standard deviation: round to one more decimal place than your original data.</u><BR>\n" );
document.write( "b.Construct at 90% confidence interval for the population average weight of all adult male grizzly bears in the wild.<BR>\n" );
document.write( "sd 0f x-bar = 66.8(to nearest tenth)/ <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%286%29 ALIGN=MIDDLE  ALT=\"sqrt%286%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 27.2709  0r s =  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=27.3 ALIGN=MIDDLE  ALT=\"27.3\"   DISABLED_style= \"max-width:90%; height:auto;\" > Yes<BR>\n" );
document.write( "Df 6-1=5 Yes<BR>\n" );
document.write( "t=2.0150 0r 2.02  Yes<BR>\n" );
document.write( "= x-bar ± (t * Standard error) = Yes\r<BR>\n" );
document.write( "\n" );
document.write( "Might recommend following site to check sample mean and corrected sample deviation for sample sets<BR>\n" );
document.write( "numberempire.com/statisticscalculator.php </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );