document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=428041>Question 428041</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In low-speed crash tests of five SMART cars, the repair costs were computed for a factory-authorized repair center and an independent repair facility.  The results are listed in the accompanying table.<BR>\n" );
document.write( "a. Is there sufficient evidence to support the claim that the independent center has lower repair costs?  Use a 0.05 significance level. \r<BR>\n" );
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document.write( "Authorized repair center	$797	$571	$904	$1,147	$418<BR>\n" );
document.write( "Independent repair center	$523	$488	$875	$911	$297<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 #297641 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=297641\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> In low-speed crash tests of five SMART cars, the repair costs were computed for a factory-authorized repair center and an independent repair facility. The results are listed in the accompanying table.<BR>\n" );
document.write( "a. Is there sufficient evidence to support the claim that the independent center has lower repair costs? Use a 0.05 significance level. <BR>\n" );
document.write( "Authorized repair center $797 $571 $904 $1,147 $418<BR>\n" );
document.write( "Independent repair center $523 $488 $875 $911 $297\r<BR>\n" );
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document.write( "Ho: ua-ui = 0<BR>\n" );
document.write( "Ha: ua-ui > 0<BR>\n" );
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document.write( "I ran a 2 Sample T-test on the data and got the following:<BR>\n" );
document.write( "test stat: t = 0.8543<BR>\n" );
document.write( "p-value = 0.2090<BR>\n" );
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document.write( "df = 7.9590<BR>\n" );
document.write( "==================<BR>\n" );
document.write( "Since the p-value is greater than 5%, fail to reject Ho.<BR>\n" );
document.write( "====================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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