document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=870611>Question 870611</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A new type of light bulb has an average lifespan of 1200 hours with a standard deviation of 75 hours. Use the table to find the probability that a light bulb chosen at random will last more than 1155 hours.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #525057 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=525057\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> mean = 1200, SD 75<BR>\n" );
document.write( "P(x > 1155),  z  = -45/75 = -.6<BR>\n" );
document.write( "P(z < -.6) = 27.43% <BR>\n" );
document.write( "Use table or Calculator; normalcdf(-10, -.6))   | -10 a placeholder </SPAN>\n" );
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