document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=395266>Question 395266</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A retailer believes that the proportion of items returned after purchase is less at location A than all other locations.  The other locations have a 14% return rate. Write the null and alternative hypothesis for this problem. Would you use a z test or a t-test)?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #280512 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=280512\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A retailer believes that the proportion of items returned after purchase is less at location A than all other locations. The other locations have a 14% return rate. Write the null and alternative hypothesis for this problem. Would you use a z test or a t-test)? <BR>\n" );
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document.write( "Ho: pA-pB = 0<BR>\n" );
document.write( "Ha: pA-pB < 0<BR>\n" );
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document.write( "I would use a z-test because it is a <BR>\n" );
document.write( "test of difference of proportions.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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