Evaluate the following formula for P₁ = 0.5, P2 = 0.1, P₁ P2 = 0, p=0.347407, q=0.802649, n₁ = 68, and n₂ = 82. (P1-P2)-(P1-P2) p.qp q n₁ n₂ Z= =(Round to two decimal places as needed.)

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