document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=131445>Question 131445</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please kindly help me.  I am struggling with this question.  I desperately need your help. \r<BR>\n" );
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document.write( "12.48 In the following regression, X = weekly pay, Y = income tax withheld, and 						<BR>\n" );
document.write( "n = 35 McDonald’s employees. 						<BR>\n" );
document.write( "(a) Write the fitted regression equation. 						<BR>\n" );
document.write( "(b) State the degrees of freedom for a two-tailed test for zero slope, and use Appendix D to find the 						<BR>\n" );
document.write( "critical value at alpha = .05.						<BR>\n" );
document.write( "(c) What is your conclusion about the slope? 						<BR>\n" );
document.write( "(d) Interpret the 95 percent confidence limits for the slope. 						<BR>\n" );
document.write( "(e) Verify that F = t2 for the slope. 						<BR>\n" );
document.write( "(f) In your own words, describe the fit of this   regression.						<BR>\n" );
document.write( "						<BR>\n" );
document.write( "R2	0.202					<BR>\n" );
document.write( "Std. Error	6.816					<BR>\n" );
document.write( "n 	35					<BR>\n" );
document.write( "						<BR>\n" );
document.write( "ANOVA table						<BR>\n" );
document.write( "Source 	  SS 	df 	MS	F	p-value	<BR>\n" );
document.write( "Regression 	387.6959	1	387.6959	8.35	0.0068	<BR>\n" );
document.write( "Residual 	1533.0614	33	46.4564			<BR>\n" );
document.write( "Total 	1920.7573	34				<BR>\n" );
document.write( "						<BR>\n" );
document.write( "Regression output 					Confidence interval	<BR>\n" );
document.write( "variables coefficients 	std. error  t(df=33)	p-value 95% lower95% upper<BR>\n" );
document.write( "Intercept	30.7963	6.4078	4.806	0.0000	17.7595	43.8331<BR>\n" );
document.write( "Slope 	0.0343	0.0119	2.889	0.0068	0.0101	0.0584<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 #95969 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=95969\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> You will have to judge whether this feedback makes any sense as this is <BR>\n" );
document.write( "not a familiar area for me.<BR>\n" );
document.write( "_____________________________\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
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document.write( "In the following regression, X = weekly pay, Y = income tax withheld, and <BR>\n" );
document.write( "n = 35 McDonald’s employees. <BR>\n" );
document.write( "(a) Write the fitted regression equation.<BR>\n" );
document.write( "Looking at your \"Regression Output\" I see<BR>\n" );
document.write( "Y = 0.0343X + 30.7963<BR>\n" );
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document.write( "(b) State the degrees of freedom for a two-tailed test for zero slope, and use Appendix D to find the <BR>\n" );
document.write( "critical value at alpha = .05.<BR>\n" );
document.write( "-------<BR>\n" );
document.write( "Again, based on your \"Regression Output\" data, df=33<BR>\n" );
document.write( "I don't know what your \"D\" chart is but you have to look<BR>\n" );
document.write( "at it to find the critical values for 2-tail tests with<BR>\n" );
document.write( "alpha=5%<BR>\n" );
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document.write( "(c) What is your conclusion about the slope?<BR>\n" );
document.write( "The p-value is 0.0068 so, whatever your Ho is, you<BR>\n" );
document.write( "are going to reject it.<BR>\n" );
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document.write( "(d) Interpret the 95 percent confidence limits for the slope.<BR>\n" );
document.write( "With 95% confidence you can claim the slope of the regression<BR>\n" );
document.write( "line is between 0.0101  and 0.0584.<BR>\n" );
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document.write( "(e) Verify that F = t2 for the slope.<BR>\n" );
document.write( "Not sure what this is all about.<BR>\n" );
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document.write( "(f) In your own words, describe the fit of this regression.<BR>\n" );
document.write( "I'll leave that to you.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. \r<BR>\n" );
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document.write( "R2 0.202 <BR>\n" );
document.write( "Std. Error 6.816 <BR>\n" );
document.write( "n 35 \r<BR>\n" );
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document.write( "ANOVA table <BR>\n" );
document.write( "Source SS df MS F p-value <BR>\n" );
document.write( "Regression 387.6959 1 387.6959 8.35 0.0068 <BR>\n" );
document.write( "Residual 1533.0614 33 46.4564 <BR>\n" );
document.write( "Total 1920.7573 34 \r<BR>\n" );
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document.write( "Regression output Confidence interval <BR>\n" );
document.write( "variables coefficients std. error t(df=33) p-value 95% lower95% upper<BR>\n" );
document.write( "Intercept 30.7963 6.4078 4.806 0.0000 17.7595 43.8331<BR>\n" );
document.write( "Slope 0.0343 0.0119 2.889 0.0068 0.0101 0.0584\r<BR>\n" );
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