document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=198601>Question 198601</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Sixty-four students in an introductory college economics class were asked how many credits they had earned in college, and how certain they were about their choice of major. Research question: At � = .01, is the degree of certainty independent of credits earned? Certainty<BR>\n" );
document.write( "Credits Earned Very Uncertain Somewhat Certain Very Certain Row Total<BR>\n" );
document.write( "      0 -9      12             8                3            23<BR>\n" );
document.write( "     10-59       8             4               10            22<BR>\n" );
document.write( "     60 or more  1             7               11            19<BR>\n" );
document.write( "Col Total       21            19               24            64\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Applied Statistics in Business and Economics (2007) by David P. Doane and Lori E. Seward <BR>\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 #149134 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=149134\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Sixty-four students in an introductory college economics class were asked how many credits they had earned in college, and how certain they were about their choice of major. Research question: At � = .01, is the degree of certainty independent of credits earned? Certainty<BR>\n" );
document.write( "Credits Earned Very Uncertain Somewhat Certain Very Certain Row Total<BR>\n" );
document.write( "      0 -9      12             8                3            23<BR>\n" );
document.write( "     10-59       8             4               10            22<BR>\n" );
document.write( "     60 or more  1             7               11            19<BR>\n" );
document.write( "Col Total       21            19               24            64<BR>\n" );
document.write( "-------------------------<BR>\n" );
document.write( "Ho: degree of certainty is independent of credits earned<BR>\n" );
document.write( "H1: they are dependent<BR>\n" );
document.write( "--------------------<BR>\n" );
document.write( "Run a Chi-Sq test on the 3 by 4 set of data to get:<BR>\n" );
document.write( "test statistic: Chi-Sq = 14.76<BR>\n" );
document.write( "p-value = 0.0222<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Decision: Since the p-value is greater than 1%, Fail to reject Ho.<BR>\n" );
document.write( "The row and column factors are independent.<BR>\n" );
document.write( "=============================================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );