document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=617726>Question 617726</A>: <I><SPAN STYLE=\"word-break: break-all;\"> at one school, the average amount of time that tenth-graders spend watching tv each week is 18.4 hours.  The principal introduces a campaign to encourage the students to watch less tv.  One year later, the principal wants to perform a hypothesis test to determine whether the average amount of time spent watching tv per week has decreased.  Formulate the null and alternative hypotheses for the study described. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #388512 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=388512\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> at one school, the average amount of time that tenth-graders spend watching tv each week is 18.4 hours. The principal introduces a campaign to encourage the students to watch less tv. One year later, the principal wants to perform a hypothesis test to determine whether the average amount of time spent watching tv per week has decreased. Formulate the null and alternative hypotheses for the study described.<BR>\n" );
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document.write( "Ho: u(is) >= 18.4<BR>\n" );
document.write( "Ha: u(is) < 18.4 (this is what the principal hopes)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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