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Assume that you plan to use a significance level of alpha=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. A random sampling of sixty pitchers from the National League and fifty-two pitchers from the American League showed that 19 National and 11 American League pitchers had E.R.A.'s below 3.5

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