Question: 3.2. For each given p, let Z have a binomial distribution with parameters p and N. Suppose that N is itself binomially distributed with parameters

3.2. For each given p, let Z have a binomial distribution with parameters p and N. Suppose that N is itself binomially distributed with parameters q and M. Formulate Z as a random sum and show that Z has a binomial distribution with parameters pq and M.

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