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

A binomial probability distribution hasp= .20 andn= 100.

  1. What are the mean and standard deviation?
  2. Is this situation one in which binomial probabilities can be approximated by the normal probability distribution? Explain.
  3. What is the probability of 18 to 22 successes?

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