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3. Let X, Z and W be three random variables distributed, respectively, as X ~ N (-10, 9) , Z ~ N (0, 1) ,

3. Let X, Z and W be three random variables distributed, respectively, as X ~ N (-10, 9) , Z ~ N (0, 1) , W ~ X (i) Compute P (X > -6) . (ii) Find a c such that P (Z > c) = 0.75. (iii) Find a c such that P (W

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