document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=134817>Question 134817</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hi, I'm an online student with no physical textbook and the online textbook sucks, please help. Wish I could sit down with you and work these so you could explain it to me.  I'm just lost with Statistics all together.  Thanks for your help.\r<BR>\n" );
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document.write( "In Dallas, some fire trucks were painted yellow (instead of red) to heighten their visibility. During a test period, the fleet of red fire trucks made 153,348 runs and had 20 accidents, while the fleet of yellow fire trucks made 135,035 runs and had 4 accidents. At &#945; = .01, did the yellow fire trucks have a significantly lower accident rate? \r<BR>\n" );
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document.write( "(a) State the hypotheses. <BR>\n" );
document.write( "(b) State the decision rule and sketch it. <BR>\n" );
document.write( "(c) Find the sample proportions and z test statistic. <BR>\n" );
document.write( "(d) Make a decision. <BR>\n" );
document.write( "(e) Find the p-value and interpret it. <BR>\n" );
document.write( "(f ) If statistically significant, do you think the difference is large enough to be important? If so, to whom, and why? <BR>\n" );
document.write( "(g) Is the normality assumption fulfilled? Explain.<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #98671 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=98671\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> I believe this was answered tonight.<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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