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Consider a sequence of independent Bernoulli trials

Consider a sequence of independent Bernoulli trials with p _ 0.2.

(a) What is the expected number of trials to obtain the first success?

(b) After the eighth success occurs, what is the expected number of trials to obtain the ninth success?

(a) What is the expected number of trials to obtain the first success?

(b) After the eighth success occurs, what is the expected number of trials to obtain the ninth success?

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