document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1189113>Question 1189113</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The mean birth weight for Ethiopian babies is μ =3.1 kg with sd (σ=0.5 kg)<BR>\n" );
document.write( "A) What weight values encompass the 95% newborns? <BR>\n" );
document.write( "B) If the cut of point for low birth weight is 2.5kg, what proportion of the new <BR>\n" );
document.write( "borns are lbw? <BR>\n" );
document.write( "C) Find the 10th percentile birth weight. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #820365 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=820365\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> z=(x-mean)/sd<BR>\n" );
document.write( "95% are between +/- 1.96 z or 0.98 kg<BR>\n" );
document.write( "so the weight is 3.1 +/- 0.98 or (2.12 kg, 4.08 kg)<BR>\n" );
document.write( "-<BR>\n" );
document.write( "z(2.5)=(2.5-3.1)/0.5<BR>\n" );
document.write( "=-1.2<BR>\n" );
document.write( "Probability z < -1.2 is 0.1151<BR>\n" );
document.write( "-<BR>\n" );
document.write( "z(0.10)=-1.282<BR>\n" );
document.write( "-1.282=(x-3.1)/0.5<BR>\n" );
document.write( "x=2.46 kg </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );