Explanation:
1. Z = Z
(X − μₓ) / σₓ = a + bX
-μₓ/σₓ + 1/σₓ X = a + bX
a = -μₓ/σₓ
b = 1/σₓ
2. Z = -μₓ/σₓ + 1/σₓ X
μz = -μₓ/σₓ + 1/σₓ (μₓ)
μz = 0
