document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1034332>Question 1034332</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The average length o stay in a chronic disease hospital for a certain type of patient is 60 days with a standard deviation of 15.  It is reasonable to assume an approx.  normal distribution of length of stay.  Fill in the blanks.  The probability is 0.9534 that a patient wlil s tay between _____ and ______days. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #648944 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=648944\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Symmetrical function where the missing probability is 1-0.9534=0.0466<BR>\n" );
document.write( "Take half of that and get 0.0233.<BR>\n" );
document.write( "Now, find the z value that gives a probability of 0.0233.That occurs (use invnorm on calculator) when z=+/-1.99.<BR>\n" );
document.write( "z=(x-mu)/sigma<BR>\n" );
document.write( "1.99=(x-60)/15<BR>\n" );
document.write( "29.85=x-60<BR>\n" );
document.write( "x=89.85 or 30.15(30.15 and 89.85 days)<BR>\n" );
document.write( "Check is that at 2 SDs the result would be (30,90).\r<BR>\n" );
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