document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1009883>Question 1009883</A>: <I><SPAN STYLE=\"word-break: break-all;\"> What critical region(s) for z would be used to test the hypotheses:  H_0:&#956;=12 and H_a:&#956;&#8800;12, for &#61537; = 0.01 ?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #625355 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=625355\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> What critical region(s) for z would be used to test the hypotheses: H_0:&#956;=12 and H_a:&#956;&#8800;12, for &#61537; = 0.01 ? <BR>\n" );
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document.write( "Since you are testing equality in Ho, you need a 2-tail test.<BR>\n" );
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document.write( "The reject intervals at 1% significance are 0.005 in the left<BR>\n" );
document.write( "tail and 0.005 in the right tail.<BR>\n" );
document.write( "The z boundary for the left tail is -2.5758<BR>\n" );
document.write( "The z boundary for the right tail is +2.5758<BR>\n" );
document.write( "If z in in either of those tails you reject Ho.<BR>\n" );
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document.write( "Answer:: z < -2.5758 OR z > +2.5758<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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