document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=935252>Question 935252</A>: <I><SPAN STYLE=\"word-break: break-all;\"> There are 1000 participants in a sample, how many people are likely to have completed task within 16 minutes? Mean =24, SD = 4\r<BR>\n" );
document.write( "\n" );
document.write( "In the same study the researcher is interested in a possible relationship between age in years and the length of time (in minutes) taken to complete the task\r<BR>\n" );
document.write( "\n" );
document.write( "Identify the study variables and level of measurement for each\r<BR>\n" );
document.write( "\n" );
document.write( "The results are presented as follows:<BR>\n" );
document.write( "r= 0.7,   P = 0.01\r<BR>\n" );
document.write( "\n" );
document.write( "What do the r and p values represent?<BR>\n" );
document.write( "What is suggested by these results? \r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #568440 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=568440\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> There are 1000 participants in a sample, how many people are likely to have completed task within 16 minutes? Mean =24, SD = 4<BR>\n" );
document.write( "----<BR>\n" );
document.write( "z(16) = (16-24)/4 = -2<BR>\n" );
document.write( "P(x <= 16) = P(z <= -2) = 0.02275<BR>\n" );
document.write( "Ans:: 0.0228*1000 = 23 if rounded up<BR>\n" );
document.write( "-----------------------<BR>\n" );
document.write( " In the same study the researcher is interested in a possible relationship between age in years and the length of time (in minutes) taken to complete the task  Identify the study variables and level of measurement for each <BR>\n" );
document.write( "The results are presented as follows:<BR>\n" );
document.write( " r= 0.7, P = 0.01 <BR>\n" );
document.write( "What do the r and p values represent?<BR>\n" );
document.write( "Ans: r is the strength of the linear relationship between age and time <BR>\n" );
document.write( "to complete the task.<BR>\n" );
document.write( "p is p-value associated with testing the hypothesis<BR>\n" );
document.write( "that r = 0 (no linear regression).<BR>\n" );
document.write( "--------------<BR>\n" );
document.write( " What is suggested by these results?<BR>\n" );
document.write( "If r = 0.7 there is a relatively strong linear relation<BR>\n" );
document.write( "between age and time to complete.<BR>\n" );
document.write( "If p = 0.01 the hypothesis would be rejected at the alpha<BR>\n" );
document.write( "level of significance if alpha is greater than 1%.<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. <BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );