document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=263045>Question 263045</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Totally lost on this. Assume that the mean systolic blood pressure of normal <BR>\n" );
document.write( "adults is 120 mmHg and the standard deviation is 5.6. Assume a normal distribution. Thats one part\r<BR>\n" );
document.write( "\n" );
document.write( "Then they are asking if an individual is selected find the probability that the indivdual's pressure will be between 120 and 121.8 mmhg.\r<BR>\n" );
document.write( "\n" );
document.write( "Any clarification for these would be great. Thanks for all your help </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #193863 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=193863\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Assume that the mean systolic blood pressure of normal <BR>\n" );
document.write( "adults is 120 mmHg and the standard deviation is 5.6. <BR>\n" );
document.write( "Assume a normal distribution. Thats one part. <BR>\n" );
document.write( "Then they are asking if an individual is selected find the probability that the indivdual's pressure will be between 120 and 121.8 mmhg.<BR>\n" );
document.write( "-----------------------<BR>\n" );
document.write( "Find the z-value of 120 and of 121.8<BR>\n" );
document.write( "z(120) = (120-120)/5.6 = 0<BR>\n" );
document.write( "z(121.8) = (121.8-120)/5.6 = 1.8/5.6 = 0.3214..<BR>\n" );
document.write( "-------------------------------------------------<BR>\n" );
document.write( "P(120<= x <=121.8) = P(0<= z <=0.3214) = 0.1260,,<BR>\n" );
document.write( "======================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.  </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );