document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1191990>Question 1191990</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The life of electronic bulb follows a normal distribution with mean life of 3000 hours and standard deviation of 200 hours. what is the probability that a tube lights has more life than 3400 hours?? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #823867 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=823867\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> z=(x-mean)/sd<BR>\n" );
document.write( "=400/200<BR>\n" );
document.write( "=2<BR>\n" );
document.write( "The probability z is > 2 is 0.0228. </SPAN>\n" );
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