Question: 7 -7 Using Pooled Sample propertion. p = x + X n+n - is denated by & and it combines the two sample propertions.

7 -7 Using Pooled Sample propertion. p = x + X n+n - is denated by & and it combines the two sample propertions. inte one proportion, as shown here: Test stadistics for two propertions (with Ho: P = p) (P- P) - (P-P2) P9 n, P9 + nz where where P =Pz= = 0 (assumed in the null hypothesis) p = x +xz (pocked sample proputon) $ 9 = 1 - p Atnz Confidence interval Estimate of P - P = 0 the confidence interval estimate of the difference (-12)-EL Margin of Error E = 2012 1 P Pis (P = p) < (P + P) + E J PI PIZ + nz n

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