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Assume that you plan to use a significance level of α = 0.05 to test the...

Assume that you plan to use a significance level of α = 0.05 to test the claim that p1 = p2. Use the given sample sizes and numbers of successes to find the z test statistic for the hypothesis test.

In a vote on the Clean Water bill, 44% of the 205 Democrats voted for the bill while 42% of the 230 Republicans voted for it.

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Answer #1

Given:

= 0.05,

Democrats voted:

n1 = 205, = 44% = 0.44, = 1 - = 1 - 0.44 = 0.56

Republican voted:

n2 = 230, = 42% = 0.42, = 1 - = 1 - 0.42 = 0.58

Q = 1-P = 1 - 0.43 = 0.57

Test statistic:

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