document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=132766>Question 132766</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Faced with rising fax costs, a firm issued a guideline that transmissions of 10 pages or more should be sent by 2-day mail instead.  Exceptions are allowed, but they want the average to be 10 or below.  The firm examined 35 randomly chosen fax transmissions during the next year, yielding a sample mean of 14.44 with a standard deviation of 4.45 pages.<BR>\n" );
document.write( "a.  At the .01 level of significance, is the true mean grater than 10?<BR>\n" );
document.write( "Use Excell to find the right-tail p-value. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #97075 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=97075\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Faced with rising fax costs, a firm issued a guideline that transmissions of 10 pages or more should be sent by 2-day mail instead.  Exceptions are allowed, but they want the average to be 10 or below.  The firm examined 35 randomly chosen fax transmissions during the next year, yielding a sample mean of 14.44 with a standard deviation of 4.45 pages.<BR>\n" );
document.write( "a.  At the .01 level of significance, is the true mean grater than 10?<BR>\n" );
document.write( "Use Excell to find the right-tail p-value.<BR>\n" );
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document.write( "Ho: mu = 10<BR>\n" );
document.write( "Ha: mu > 10 (Claim)<BR>\n" );
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document.write( "Critical value for one-tail t-test with alpha = 1% and df=34: t = 2.326<BR>\n" );
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document.write( "Test statistic: t(14.44) = (14.44-10) = 5.9027..<BR>\n" );
document.write( "p-value = P(5.9027 < t < 10,with df=34) = 0.00000057596...<BR>\n" );
document.write( "--------------------<BR>\n" );
document.write( "Conclusion: Since p-value is less than 1%, reject Ho:<BR>\n" );
document.write( "The test results support the Claim.<BR>\n" );
document.write( "====================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );