document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=698348>Question 698348</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Error Analysis.The error in measuring the diameter of a large tree in inches is normal(-0.25,0.5).Find the probability that the error is between -1 and 1 inches. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #430734 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=430734\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Error Analysis.The error in measuring the diameter of a large tree in inches is normal(-0.25,0.5).Find the probability that the error is between -1 and 1 inches.<BR>\n" );
document.write( "------<BR>\n" );
document.write( "z(-1) = (-1--0.25)/0.5 = -0.75/0.5 = -1.5<BR>\n" );
document.write( "---<BR>\n" );
document.write( "z(1) = (1--0.25)/0.5 = 1.25/0.5 = 2.5<BR>\n" );
document.write( "----<BR>\n" );
document.write( "P(-1< x <1) = P(-1.5< z < 2.5) = normalcdf(-1.5,2.5) = 0.9270<BR>\n" );
document.write( "=========<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "========= </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );