document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=127447>Question 127447</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Having trouble with getting breakdown on this, can anyone help?\r<BR>\n" );
document.write( "\n" );
document.write( "Facing rising fax costs, a firm issued guidelines that transmissions of 10 pages or more should be done by 2 day mail instead. Exceptions are allowed, they want the average to be 10 or below. A 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. (a) At the .01 level of significance, is the true mean greater than 10? (b) Use excel to find the right tail – p value. \r<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "\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 #93396 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=93396\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Facing rising fax costs, a firm issued guidelines that transmissions of 10 pages or more should be done by 2 day mail instead. Exceptions are allowed, they want the average to be 10 or below. A firm examined randomly chosen fax transmissions during the next year, yielding a sample mean of 14.44 with a standard deviation of 4.45 pages. (a) At the .01 level of significance, is the true mean greater than 10? (b) Use excel to find the right tail – p value. <BR>\n" );
document.write( "---------------<BR>\n" );
document.write( "Ho: mu = 10<BR>\n" );
document.write( "Ma: mu > 10<BR>\n" );
document.write( "---------------------<BR>\n" );
document.write( "one-tailed test with alpha=1%; critical value = 2.326<BR>\n" );
document.write( "-------------<BR>\n" );
document.write( "Test Statistic: <BR>\n" );
document.write( "t(14.44) = (14.44-10)/(4.45/sqrt(35)) = 4.44*sqrt(35)/4.45 = 5.90<BR>\n" );
document.write( "------------<BR>\n" );
document.write( "The test statistic is greater than the critical value so reject Ho.<BR>\n" );
document.write( "-------<BR>\n" );
document.write( "The p-value = 0.0000000018236...<BR>\n" );
document.write( "====================================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );