What are the mean and standard deviation

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

If required, round your answers to four decimal places.

a. What are the mean and standard deviation?

c. What is the probability of exactly 21 successes? (Fill in all of the steps leading you to your answer.)

P(X=21) ≈ P( blank ≤ X ≤ blank )

= P( blank ≤ z ≤ blank ) = blank  - blank  = blank 

d. What is the probability of 17 to 23 successes?

e. What is the probability of 14 or fewer successes?

Reference no: EM132388582

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