Question

The polling organization Ipsos conducted telephone surveys in March of 2004, 2005 and 2006. In each year, 1001 people age 18 or older were asked about whether they planned to use a credit card to pay federal income taxes that year. The data are given in the accompanying table. Is there evidence that the proportion falling in the three credit card response categories is not the same for all three years? Test the relevant hypotheses using a .05 significance level. (Use 2 decimal places.)

Intent to Pay Taxes with a Credit Card
	2004	2005	2006
Definitely/Probably Will Might/Might Not/Probably Not Definitely Not	44 185 800	43 183 765	50 190 798

χ² =  

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Answer 1