document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=362531>Question 362531</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A digital camcorder repair service has set a goal not to exceed an average of 5 working days from<BR>\n" );
document.write( "the time the unit is brought in to the time repairs are completed. A random sample of 12 repair<BR>\n" );
document.write( "records showed the following repair times (in days): 9, 2, 5, 1, 5, 4, 7, 5, 11, 3, 7, 2. At &#945; = .05 is<BR>\n" );
document.write( "the goal being met? Repair </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #258597 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=258597\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A digital camcorder repair service has set a goal not to exceed an average of 5 working days from the time the unit is brought in to the time repairs are completed. A random sample of 12 repair records showed the following repair (in days) 9,2,5,1,5,4,7,5,11,3,7,2. At a=.05 is the goal being met?<BR>\n" );
document.write( "----------------------------------------<BR>\n" );
document.write( "Ho: u <= 5 (goal)<BR>\n" );
document.write( "Ha: u > 5<BR>\n" );
document.write( "---------------<BR>\n" );
document.write( "x-bar = 5.08333333...<BR>\n" );
document.write( "s = 2.998737....<BR>\n" );
document.write( "t(5.08333) = (5.08333 - 5)/2.9987.../sqrt(12) = 0.096267<BR>\n" );
document.write( "p-value for one-tail test with df=11 is P(0.096267 < t < 10) = 0.4625...<BR>\n" );
document.write( "-----------------<BR>\n" );
document.write( "Conclusion: <BR>\n" );
document.write( "Since p-value is greater than 5% fail to reject Ho.<BR>\n" );
document.write( "The goal is being met.<BR>\n" );
document.write( "=========================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. \r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );