document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1172896>Question 1172896</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A phone company keeps statistics on the number of messages text that your customers send each month. According to statistics, the number of messages sent per customer in a month has a normal distribution. The data is shown below.<BR>\n" );
document.write( "• The average is 278 messages per month.<BR>\n" );
document.write( "• The standard deviation is 19 messages per month.<BR>\n" );
document.write( "What is the probability that a customer sends LESS than 316 messages in a month? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #798336 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=798336\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> This is z < (316-278)/19 or z < 2<BR>\n" );
document.write( "That probability is 0.9772. </SPAN>\n" );
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