document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=139925>Question 139925</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Can people really identify their favorite brand of cola? Volunteers tasted coca-cola classic, pepsi, Diet cola,and Diet pepsi, with the results ahawn below. At a = .05, is the correctness of the prediction different for the two types of cola drinkers? could you identify your favorite brand in this kind of test? Since it is a 2x2 table, try also a two-tailed two-sample z test for n= n2, vertify that z2 is the same as your chi square statistic, which test do you perfer? Why ( Data are from consumer Reports 56, no.8 (August 1991), p. 519.\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 </SPAN>\n" );
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document.write( "Stan H. </SPAN>\n" );
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