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

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.

. 6- i=1