document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1075163>Question 1075163</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 	1.	A national magazine claims that the average college student watches less television than the general public.  The national average is 29.4 hours per week, with a standard deviation of 2 hours.  A sample of 30 college students has a mean of 27 hours.  Is there enough evidence to support the claim at  a=.01?\r<BR>\n" );
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document.write( "Make a decision regarding Ho<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 #689853 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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/cgi-bin/show-face.mpl?user=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=689853\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Ho: watch same amount or more.<BR>\n" );
document.write( "Ha: watch less<BR>\n" );
document.write( "alpha = 0.01 P{reject Ho|Ho true}<BR>\n" );
document.write( "test stat is a t(x bar-mean)/s/sqrt (n)<BR>\n" );
document.write( "critical value: t <-2.861 with 29 df<BR>\n" );
document.write( "t=(27-29.4)/(2/sqrt (n)<BR>\n" );
document.write( "=-2.4*sqrt(30)/2<BR>\n" );
document.write( "=-6.57<BR>\n" );
document.write( "Strongly reject Ho and there is evidence they watch fewer hours than the general public. </SPAN>\n" );
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