# Show that each of the following families is an exponential family. (a) Normal family with either parameter

## Question:

(a) Normal family with either parameter μ or σ known

(b) Gamma family with either parameter α or α known or both unknown

(c) Beta family with either parameter α or β known or both unknown

(d) Poisson family

(e) Negative binomial family with r known, 0 < p < 1

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