document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=131118>Question 131118</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me.  I am having problem understanding this question.\r<BR>\n" );
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document.write( "Can people really identify their favourite brand of cola? Volunteers tasted Coca-Cola Classic, Pepsi, Diet Coke, and Diet Pepsi, with the results shown below. Research question: At &#945; = .05, is the correctness of the prediction different for the two types of cola drinkers? Could you identify your favourite brand in this kind of test? Since it is a 2 × 2 table, try also a two-tailed two-sample z test for &#960;1 = &#960;2  and verify that z2 is the same as your chi-square statistic. Which test do you prefer? Why?\r<BR>\n" );
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document.write( "Correct?   			Regular Cola 	Diet Cola 	Row Total<BR>\n" );
document.write( "Yes, got it right 			7 		7 		14<BR>\n" );
document.write( "No, got it wrong			 12 		20		 32<BR>\n" );
document.write( "Col Total				 19 		27		46\r<BR>\n" );
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document.write( "Thank you for your help.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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