document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1169826>Question 1169826</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 5. Diastolic blood pressure are assumed to follow a nomal distribution with a mean of 85 and a standard deviation of 12.<BR>\n" );
document.write( "a. what proportion of people have diastolic blood pressure less than 90?<BR>\n" );
document.write( "b.what proportion have diastolic blood pressure between 80 and 90?<BR>\n" );
document.write( "c. if someone has a diastolic blood pressure of 100, what percentile is he/she in? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #794901 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=794901\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a. z<(90-85)/12 or 5/12. Probability z is less than that is 0.6615<BR>\n" );
document.write( "b. between 80 and 90 done the same way. On the calculator do normalcdf(80,90,85,12) for 0.3231 probability <BR>\n" );
document.write( "c. that is a z=1.25 (100-85)/12. This is the 89.4th percentile.<BR>\n" );
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