document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=823940>Question 823940</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In a sample of seven cars, each car was tested for nitrogen-oxide emissions ( in grams per mile) and the following results were obtained: 0.16, 0.19, 0.05, 0.08, 0.18, 0.09, 0.05. Assuming that this sample is representative of the cars in use, construct a 98% confidence interval estimate of the mean amount of nitrogen oxide emissions for all cars. If the EPA requires that nitrogen-oxide emissions be less than 0.165 g/mi, can we safely conclude that this requirement is being met? What is the confidence interval estimate of the mean amount of nitrogen-oxide emissions for all cars? \r<BR>\n" );
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document.write( "__ g/mi < u < __ g/mi ? <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 #495945 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=495945\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> In a sample of seven cars, each car was tested for nitrogen-oxide emissions ( in grams per mile) and the following results were obtained: 0.16, 0.19, 0.05, 0.08, 0.18, 0.09, 0.05. Assuming that this sample is representative of the cars in use, construct a 98% confidence interval estimate of the mean amount of nitrogen oxide emissions for all cars. What is the confidence interval estimate of the mean amount of nitrogen-oxide emissions for all cars?<BR>\n" );
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document.write( "x-bar = 0.1143<BR>\n" );
document.write( "ME = 2.3263*0.0608/sqrt(7) = 0.0535<BR>\n" );
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document.write( "95% CI: 0.1143-0.0535 < u < 0.1143+0.0535<BR>\n" );
document.write( "95% CI: 0.0608 < u < 0.1678<BR>\n" );
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document.write( " If the EPA requires that nitrogen-oxide emissions be less than 0.165 g/mi, can we safely conclude that this requirement is being met?<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.<BR>\n" );
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