Concept explainers
In each of the following problems, the binomial distribution will be used. Answers may vary slightly depending on whether the binomial distribution formula, the binomial distribution table, or distribution results from a calculator or computer are used. Please answer the following questions and then complete the problem.
What makes up a trial? What is a success? What is a failure?
What are the values of n, p, and q?
Binomial Probabilities: Coin Flip A fair quarter is flipped three times. For each of the following probabilities, use the formula for the binomial distribution and a calculator to compute the requested
- (a) Find the probability of getting exactly three heads.
- (b) Find the probability of getting exactly two heads.
- (c) Find the probability of getting two or more heads.
- (d) Find the probability of getting exactly three tails.
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Understandable Statistics: Concepts and Methods
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