Question: z-value for testing p1 - p2 = dv: To test the null hypothesis H0 that p1 - p2 = do, where d0 0, we

z-value for testing p1 - p2 = dv: To test the null hypothesis H0 that p1 - p2 = do, where d0 ‰ 0, we base our decision on

which is a value of a random variable whose distribution approximates the standard normal distribution as long as n1 and n2 are both large. Test the hypothesis that the percentage of town voters favoring the construction of the chemical plant will not exceed the percentage of county voters by more than 3%. Use a P-value in your conclusion.

Pi -i2 -do Vpiqi/ni+ pro2/n2

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