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Q1) Miramar Company is considering contracting with market research firm to do survey to find out future market conditions. Results of survey will point to either positive or negative market conditions. There is .60 probability of positive report, given favourable conditions; a .30 probability of positive report, given stable conditions; and.10 probability of positive report, given unfavourable conditions. There is.90 probability of negative report, given unfavourable conditions;.70 probability, given stable conditions; and.40 probability, given favourable conditions. Using decision tree analysis and posterior probability tables, find out the decision strategy company must follow, expected value of strategy, and maximum amount the company must pay market research firm for survey results.
Suppose you were to cut up the directory and pull out one listing at random to contact.
A probability value of .25 means that an event will occur:
In each of the following situations, the sampling frame does not match the population, resulting in undercoverage. Give examples of population members that might have been omitted:
A study of cardiovascular risk factors compared heavy smokers, light smokers, and nonsmokers. Both men and women were included in the study so that the two factors are smoking level and gender.
Compute a 95% confidence interval for the population proportion of positive drug tests. Explain why is the normality assumption not a problem despite the very small value of p.
What is the probability that the project will be completed in 17 months or less?
A customer from Cavallaro's Fruit Stand picks a sample of 5 oranges at random from a crate containing 80 oranges, of which 6 are rotten. What is the probability that the sample contains 1 or more rotten oranges? (Round your answer to three decimal..
Assume the likelihood that any flight on Northwest Airlines arrives within 15 minutes of the scheduled time is 0.90. We choose four flights from yesterday for study.
For all questions, clearly explain/show your answers. For the Analysis section, justify your answers with the appropriate graphs, statistics, equations, etc.
At 1 excavation site 8641 pot shards have been found that have not presently been cleaned also identified. Define the probability.
Compare these with the percentages specified by Tchebysheff's Theorem.
If statistically significant, do you believe the difference is large enough to be significant? If so, to whom, and explain why? Is normality assumption fulfilled? Describe.
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