document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=520620>Question 520620</A>: <I><SPAN STYLE=\"word-break: break-all;\"> For a certain type of computer the length of time between charges of the battery is normally distributive with a mean of 50 hours and a standard deviation of 15 hours. Marvin owns one of these computers and wants to know the probability that the length time will be between 50 and 70 hours </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #346154 by </B><A HREF=/tutors/aboutme.mpl?userid=edjones><B>edjones(8007)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=edjones><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=edjones><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=346154\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> z[1]=(50-50)/15=0<BR>\n" );
document.write( "z[2]=(70-50)/15=20/15=4/3<BR>\n" );
document.write( "0.409=area under the normal curve between 0 and 4/3<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Ed </SPAN>\n" );
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