Quiz 2_MATH302.docx - Quiz 2_MATH302 Question 1 of 20 1.0 1.0 Points The staff at a small company includes 4 secretaries 20 technicians 4 engineers 2

Quiz 2_MATH302.docx - Quiz 2_MATH302 Question 1 of 20 1.0...

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Quiz 2_MATH302 Question 1 of 20 1.0/ 1.0 Points The staff at a small company includes: 4 secretaries, 20 technicians, 4 engineers, 2 executives, and 50 factory workers. If a person is selected at random, what is the probability that he or she is a factory worker? A. 1/4 B. 1/8 C. 5/8 D. 2/5 Answer Key: C Question 2 of 20 1.0/ 1.0 Points If two events are mutually exclusive, what is the probability that one or the other occurs? A. 0.25 B. 1.00 C. Cannot be determined from the information given. D. 0.50 Answer Key: C Question 3 of 20 1.0/ 1.0 Points If one tosses a coin enough times, the proportion of "heads" will approach 0.5. This is an example of: A. the Law of Large Numbers B. subjective probabilities C. the Empirical Rule D. the Central Limit Theorem Answer Key: A Question 4 of 20 1.0/ 1.0 Points
If P(A) = P(A|B), then events A and B are said to be A. independent B. complementary C. mutually exclusive D. exhaustive Answer Key: A Question 5 of 20 1.0/ 1.0 Points The number of ways to choose two representatives from a committee of 13 people is A. 55 B. 78 C. 13! D. 156 Answer Key: B Question 6 of 20 1.0/ 1.0 Points The binomial distribution can occur in which of the following situations? I. whenever we are interested in the number of events that occur over a given interval of time II. whenever we sample from a population with only two types of members III. whenever we perform a sequence of identical experiments, each of which has only two possible outcomes A. I only B. I and II C. II and III D. All of the above Answer Key: C Question 7 of 20 1.0/ 1.0 Points
A drug is reported to benefit 40% of the patients who take it. If 6 patients take the drug, what is the probability that 4 or more patients will benefit?

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