3. What is the name of the distribution that measures the number of occurrences of an event during specified intervals?

4. What would be the characteristics of a binomial distribution?

5. A population consists of ten items, six of which are defective. In a sample of three items, what is the probability that exactly two are defective?

6. A Federal study reported that 7.5 percent of the U.S. workforce has a drug problem. A drug enforcement official for the State of Indiana wished to investigate this statement. In his sample of 20 employed workers:
a. How many would you expect to have a drug problem? What is the standard deviation?
b. What is the likelihood that none of the workers sampled has a drug problem?
c. What is the likelihood at least one has a drug problem?

7. What is "Bias"?

8. What is the Central Limit Theorem? What does it imply?

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