document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=666917>Question 666917</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 99.5-cm and a standard deviation of 2.5-cm.\r<BR>\n" );
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document.write( "Find the probability that the length of a randomly selected steel rod is between 99-cm and 106-cm.<BR>\n" );
document.write( "P(99-cm < X < 106-cm) = \r<BR>\n" );
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document.write( "I tried doing the length times the standard deviation. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #414907 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=414907\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 99.5-cm and a standard deviation of 2.5-cm. <BR>\n" );
document.write( "Find the probability that the length of a randomly selected steel rod is between 99-cm and 106-cm.<BR>\n" );
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document.write( "z(99) = (99-99.5)/2.5 = 0.5/2.5 = 1/5<BR>\n" );
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document.write( "z(106) = (106-99.5)/2.5 = 2.6<BR>\n" );
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document.write( "P(99< x <106) = P(1/5< z < 2.6) = normalcdf(1/5,2.6) = 0.4161<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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