document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=630710>Question 630710</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A researcher wanted to determine whether a program for routine cholesterol screening for college men<BR>\n" );
document.write( "would identify high serum cholesterol levels. The researcher decided that above 200 would be high. Twenty<BR>\n" );
document.write( "students were randomly selected for cholesterol screening, and the results were given below. Is there any<BR>\n" );
document.write( "evidence that asymptomatic college men have elevated serum cholesterol values? Would a large-scale screening program be warranted? Use a = 0.05<BR>\n" );
document.write( "160 210 200 230 210 150 220 190 210 220<BR>\n" );
document.write( "160 220 240 180 200 200 210 170 180 220 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #397120 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=397120\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A researcher wanted to determine whether a program for routine cholesterol screening for college men would identify high serum cholesterol levels. <BR>\n" );
document.write( "The researcher decided that above 200 would be high. <BR>\n" );
document.write( "Twenty students were randomly selected for cholesterol screening, and the results were given below. <BR>\n" );
document.write( "Is there any evidence that asymptomatic college men have elevated serum cholesterol values? <BR>\n" );
document.write( "Would a large-scale screening program be warranted? Use a = 0.05<BR>\n" );
document.write( "160 210 200 230 210 150 220 190 210 220<BR>\n" );
document.write( "160 220 240 180 200 200 210 170 180 220<BR>\n" );
document.write( "----<BR>\n" );
document.write( "x-bar = 199<BR>\n" );
document.write( "s = 25.11<BR>\n" );
document.write( "z(199) = (200-199)/[25.11/sqrt(20)] = 1/5.59 = 0.1789<BR>\n" );
document.write( "p-value = P(z > 0.1789) = normalcdf(0.1789,100) = 0.4290<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Since the p-value is greater than 5% a <BR>\n" );
document.write( "screening program wouild not be warranted.<BR>\n" );
document.write( "------<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );