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A random variable has a 0.02 probability of success in each independent trial, where the total...

A random variable has a 0.02 probability of success in each independent trial, where the total number of trials is n= 90.

        a.     What is the expected number of successes in 90 trials?

        b.     What is the standard deviation of successes in 90 trials?

        c.     Use the binomial distribution to find the probability of 90 trials.

        d.     Use the Poisson distribution to approximation find the probability of   in

               90 trials.

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