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Let X Be a Binomial Random Variable with N = \geq

Question 107

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Let X be a binomial random variable with n = 25 and p = 0.6. Approximate the following probabilities, using the normal distribution.
a. P(X \geq 20).
b. P(X \leq 15).
c. P(X = 10).

Correct Answer:

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a. 0.0329....

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