24. Suppose (S₁, S₁) is a measurable space and suppose T: S₁ S₂ is a mapping into another space S₂. For an index set I, suppose hy: S2 R, yer and define Ç := 6 (hy, γ ε Γ) to be the o-field of subsets of S2 generated by the real valued family {hy, y € I'}, that is, generated by (h¹(B), y = r, B = B(R)). Show TE S₁/9 iff hy o T is a random variable on (S₁, S₁).

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