13.43 For the following data obtained from four independent samples, use the 0.025 level in testing H0:
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13.43 For the following data obtained from four independent samples, use the 0.025 level in testing H0: 1 5 2 5 3 5 4 versus H1: At least one population proportion differs from the others.
n1 5 150, p1 5 0.30 n2 5 80, p2 5 0.20 n3 5 140, p3 5 0.25 n4 5 50, p4 5 0.26
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