document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1062013>Question 1062013</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The following information is available.<BR>\n" );
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document.write( "H0 : &#956; &#8805; 220<BR>\n" );
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document.write( "H1 : &#956; < 220<BR>\n" );
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document.write( "A sample of 64 observations is selected from a normal population. The sample mean is 215, and the population standard deviation is 15. Conduct the following test of hypothesis using the .025 significance level.<BR>\n" );
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document.write( "a.	Is this a one- or two-tailed test?<BR>\n" );
document.write( " 	 <BR>\n" );
document.write( " 	<BR>\n" );
document.write( "	One-tailed test<BR>\n" );
document.write( "	Two-tailed test<BR>\n" );
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document.write( "b.	<BR>\n" );
document.write( "What is the decision rule? (Negative amount should be indicated by a minus sign. Round your answer to 2 decimal places.)<BR>\n" );
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document.write( "   H0 when z <  <BR>\n" );
document.write( "  <BR>\n" );
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document.write( "c.	<BR>\n" );
document.write( "What is the value of the test statistic? (Negative amount should be indicated by a minus sign. Round your answer to 3 decimal places.)<BR>\n" );
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document.write( "  Value of the test statistic	<BR>\n" );
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document.write( "d.	What is your decision regarding H0?<BR>\n" );
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document.write( "	Do not reject<BR>\n" );
document.write( "	Reject<BR>\n" );
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document.write( "e.	What is the p-value? (Round your answer to 4 decimal places.)<BR>\n" );
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document.write( "  p-value	<BR>\n" );
document.write( "  <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 #676851 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=676851\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The following information is available.<BR>\n" );
document.write( "H0 : &#956; &#8805; 220<BR>\n" );
document.write( "H1 : &#956; < 220<BR>\n" );
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document.write( "A sample of 64 observations is selected from a normal population. The sample mean is 215, and the population standard deviation is 15. Conduct the following test of hypothesis using the .025 significance level.<BR>\n" );
document.write( "a.	Is this a one- or two-tailed test?:: 1-tail (H1 tells you that)<BR>\n" );
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document.write( "b. What is the decision rule? (Negative amount should be indicated by a minus sign. Round your answer to 2 decimal places.)<BR>\n" );
document.write( "invNorm(0.025) = -1.96<BR>\n" );
document.write( "Reject Ho if  z < -1.96<BR>\n" );
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document.write( "c. What is the value of the test statistic? (Negative amount should be indicated by a minus sign. Round your answer to 3 decimal places.)<BR>\n" );
document.write( "z(215) = (215-220)/[15/sqrt(64)] = -2.6667<BR>\n" );
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document.write( "d.	What is your decision regarding H0? Reject Ho<BR>\n" );
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document.write( "e.	What is the p-value? (Round your answer to 4 decimal places.)<BR>\n" );
document.write( "p-value = p(z < -2.667) = normalcdf(-100,-2.667) = 0.0038<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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