document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1078233>Question 1078233</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Could someone show me to how work this out?\r<BR>\n" );
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document.write( "2.  A study of 50 pizza delivery workers found that they could make 6 deliveries per hour with a standard deviation of 1.  Find the 95% confidence interval of the mean for all pizza delivery workers.\r<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 #692737 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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/cgi-bin/show-face.mpl?user=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=692737\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 95% CI is tdf=49, 0.975,s=1 sqrt (n)=sqrt (50)<BR>\n" );
document.write( "t value is 2.01<BR>\n" );
document.write( "interval width is +/- 2.01*1/sqrt(50)=0.284<BR>\n" );
document.write( "(5.72, 6.28) </SPAN>\n" );
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