Question: Suppose that X is a binomial random variable with n = 200 and p = 0.4. (a) Approximate the probability that X is less than

Suppose that X is a binomial random variable with n = 200 and p = 0.4.
(a) Approximate the probability that X is less than or equal to 70.
(b) Approximate the probability that X is greater than 70 and less than 90.

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