document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=121514>Question 121514</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help this needs to be done by tonight January 21 and I'm lost\r<BR>\n" );
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document.write( "If you use Excel, submit a single Excel attachment with labeled tabs; please do not submit multiple Excel attachments. A PowerPoint attachment is OK, too. I’ll deduct a point for every extra attachment.\r<BR>\n" );
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document.write( "2 - Research at the University of Toledo indicates that 50 percent of the students change their major area of study after their first year in a program. A random sample of 100 students in the College of Business revealed that 48 had changed their major area of study after their first year of the program. Has there been a significant decrease in the proportion of students who change their major after the first year in this program? Test at the .05 level of significance.\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #89160 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=89160\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Research at the University of Toledo indicates that 50 percent of the students change their major area of study after their first year in a program. A random sample of 100 students in the College of Business revealed that 48 had changed their major area of study after their first year of the program. Has there been a significant decrease in the proportion of students who change their major after the first year in this program? Test at the .05 level of significance. <BR>\n" );
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document.write( "Ho: p=0.5<BR>\n" );
document.write( "Ha: p<0.5<BR>\n" );
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document.write( "alpha = 5% implies the critical value is -1.645<BR>\n" );
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document.write( "Test Statistic: z(48/100)= (0.48-0.50)/sqrt[0.5*0.5/100]=-0.02/sqrt(0.0025)<BR>\n" );
document.write( "=-0.4<BR>\n" );
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document.write( "p-value = 35.5%<BR>\n" );
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document.write( "Conclusion: Fail to reject Ho.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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