Volunteers tasted coca cola classic, pepsi, diet coke and dietpepsi. At a= .05,

Question

Volunteers tasted coca cola classic, pepsi, diet coke and dietpepsi. At a= .05, is the correctness of the prediction differentfor the two types of cola drinkers? Could you identify yourfavorite brand in this test? since it is a 2x2 table, try also atwo tailed two sample z test for n1=n2 and verify that z2 is thesame as your chi square. Which test do you prefer? correct?         Regularcola         Dietcola            Rowtotal yes got itright      7                        7                        14 no got itwrong      12                     20                        32 coltotal               19                        27                        46 Volunteers tasted coca cola classic, pepsi, diet coke and dietpepsi. At a= .05, is the correctness of the prediction differentfor the two types of cola drinkers? Could you identify yourfavorite brand in this test? since it is a 2x2 table, try also atwo tailed two sample z test for n1=n2 and verify that z2 is thesame as your chi square. Which test do you prefer? correct?         Regularcola         Dietcola            Rowtotal yes got itright      7                        7                        14 no got itwrong      12                     20                        32 coltotal               19                        27                        46

Explanation / Answer

Volunteers tasted coca cola classic, pepsi, diet coke and dietpepsi. At a= .05,

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