A probability model g W (w; ) is said to be expressed in exponential form if it can be written

A probability model g_W(w; θ) is said to be expressed in exponential form if it can be written as

g_W(w; θ) = e^{K(w)p(θ)+S(w)+q(θ)}

where the range of W is independent of θ. Show that  K(W_i) is sufficient for θ.

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Π. 6-Σ i=1