document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=183351>Question 183351</A>: <I><SPAN STYLE=\"word-break: break-all;\"> According to the boss of the retail outlets, these are the figures of the daily sales for the month of November and December. The boss claims that the average daily sales exceed $250 000.\r<BR>\n" );
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document.write( "November 08 (in $000)<BR>\n" );
document.write( "215<BR>\n" );
document.write( "180<BR>\n" );
document.write( "240<BR>\n" );
document.write( "246<BR>\n" );
document.write( "267<BR>\n" );
document.write( "305<BR>\n" );
document.write( "245<BR>\n" );
document.write( "311<BR>\n" );
document.write( "265<BR>\n" );
document.write( "224<BR>\n" );
document.write( "285<BR>\n" );
document.write( "255<BR>\n" );
document.write( "235<BR>\n" );
document.write( "268<BR>\n" );
document.write( "290<BR>\n" );
document.write( "187<BR>\n" );
document.write( "263<BR>\n" );
document.write( "255<BR>\n" );
document.write( "266<BR>\n" );
document.write( "278<BR>\n" );
document.write( "233<BR>\n" );
document.write( "203<BR>\n" );
document.write( "226<BR>\n" );
document.write( "264<BR>\n" );
document.write( "335<BR>\n" );
document.write( "320\r<BR>\n" );
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document.write( "December 08 (in $000)<BR>\n" );
document.write( "229<BR>\n" );
document.write( "185<BR>\n" );
document.write( "238<BR>\n" );
document.write( "267<BR>\n" );
document.write( "224<BR>\n" );
document.write( "280<BR>\n" );
document.write( "260<BR>\n" );
document.write( "265<BR>\n" );
document.write( "285<BR>\n" );
document.write( "210<BR>\n" );
document.write( "235<BR>\n" );
document.write( "200<BR>\n" );
document.write( "204<BR>\n" );
document.write( "223<BR>\n" );
document.write( "187<BR>\n" );
document.write( "265<BR>\n" );
document.write( "280<BR>\n" );
document.write( "240<BR>\n" );
document.write( "248<BR>\n" );
document.write( "268<BR>\n" );
document.write( "240<BR>\n" );
document.write( "215<BR>\n" );
document.write( "225<BR>\n" );
document.write( "245<BR>\n" );
document.write( "240<BR>\n" );
document.write( "255<BR>\n" );
document.write( "320\r<BR>\n" );
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document.write( "Determine if the mean daily sale in December is significantly lower than November 2008 with the following:\r<BR>\n" );
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document.write( "a) State the null and alternative hypothesis and explain how it is derived.<BR>\n" );
document.write( "b) Which would be an appropriate test for this case?<BR>\n" );
document.write( "c) State the assumptions made in performing this test and is it reasonable?<BR>\n" );
document.write( "d) Perform an appropriate hypothesis test with alpha=0.05 using critical value approach.\r<BR>\n" );
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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 #138185 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=138185\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Determine if the mean daily sale in December is significantly lower than November 2008 with the following: <BR>\n" );
document.write( "a) State the null and alternative hypothesis and explain how it is derived.<BR>\n" );
document.write( "Ho: u(december)-u(november) = 0<BR>\n" );
document.write( "Ha: u(december)-u(november) < 0<BR>\n" );
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document.write( "b) Which would be an appropriate test for this case?<BR>\n" );
document.write( "Two-Sample T test<BR>\n" );
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document.write( "c) State the assumptions made in performing this test and is it reasonable?<BR>\n" );
document.write( "d) Perform an appropriate hypothesis test with alpha=0.05 using critical value approach<BR>\n" );
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document.write( "You need to determine the two sample means in order to conduct the test.<BR>\n" );
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document.write( "Cheers<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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