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You are interested in studying the relationship between cigarette-smoking habits in married couples. Suppose that the probability of the wife being a smoker is 0.4 whereas the probability of the husband being a smoker is 0.5. Also, suppose that if the husband is a smoker, then the probability that the wife is a smoker is 0.6; whereas if the husband is not a smoker, then the probability that the wife is a smoker is 0.2. Use these data to answer the questions below.
a. What is the probability that the husband and the wife smoke?
b. What is the probability that the husband smokes and the wife does not smoke?
How were many African Americans in the South affected after Reconstruction ended in 1877?
A coin which lands heads with probability p is tossed repeatedly. Assuming independence of the tosses, find formula for
A sample of 40 ovservations is selected from one population. The sample mean is 102 and the sample standard deviation is 5. A sample of 50 observers is selected from a second population.
During an annual heating season, the average gas bill for customers in a New England community heating their homes with gas was $457.
Please explain in your own words the duality principle.
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The monthly sales demand for a new product is uncertain, but it is considered to be adequately described by a normal random variable with mean 50,000 units and variance 100,000,000.
Fran and Ron play a series of independent games. Fran's probability of winning any particular game is 0.6 (and Ron's probability of winning is therefore 0.4). Suppose that they play a best-of-5 tournament. (That is, the winner of the tournament is..
If the probabilities of s1, s2, and s3 are 0.2, 0.4, and 0.4, respectively, then what decision should be made using the expected
A two-way ANOVA model was used to analyze an experiment with two levels of one factor, three levels of a second factor, and 6 observations per treatment combination.
Most undergraduate business students will not go on to become actual practitioners of statistical research and analysis. Considering this fact, why should such individuals bother to become familiar with business statistics?
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