document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=724318>Question 724318</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Assume that the mean hourly cost to operate a commercial airplane follows the normal distribution with a mean of $2,400 per hour and a standard deviation of $220.<BR>\n" );
document.write( "  \r<BR>\n" );
document.write( "\n" );
document.write( "What is the operating cost for the lowest 6 percent of the airplanes?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #443697 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=443697\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Assume that the mean hourly cost to operate a commercial airplane follows the normal distribution with a mean of $2,400 per hour and a standard deviation of $220.\r<BR>\n" );
document.write( "\n" );
document.write( "What is the operating cost for the lowest 6 percent of the airplanes? <BR>\n" );
document.write( "----<BR>\n" );
document.write( "Find the z-value with a left tail of 6%.<BR>\n" );
document.write( "invNorm(0.06) = -1.5548<BR>\n" );
document.write( "-----<BR>\n" );
document.write( "Find the corresponding cost:<BR>\n" );
document.write( "x = z*s + u<BR>\n" );
document.write( "x = -1.5548*220 + 2400<BR>\n" );
document.write( "--<BR>\n" );
document.write( "x = $2057.95<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" );