Question: 26. A binomial probability distribution has p = .20 and n = 100. a. What are the mean and standard deviation? b. Is this situation

26. A binomial probability distribution has p = .20 and n = 100.

a. What are the mean and standard deviation?

b. Is this situation one in which binomial probabilities can be approximated by the normal probability distribution? Explain.

c. What is the probability of exactly 24 successes?

d. What is the probability of 18 to 22 successes?

e. What is the probability of 15 or fewer successes?

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