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Question: A company has 2,100 employees belonging to the following groups: production, 1,200; marketing, 600; management, 100; other, 200. The company president wants to obtain an estimate of the views of all employees about a certain impending executive decision. The president knows that the management employees' views are most variable, along with employees in the "other" category, while the marketing and production people have rather uniform views within their groups. The production people are the most costly to sample, because of the time required to find them at their different jobs, and the management people are easiest to sample.
a. Suppose that a total sample of 100 employees is required. What are the sample sizes in the different strata under proportional allocation?
b. Discuss how you would design an optimum allocation in this case.
Find the mean and standard deviation of your simulated sample weights. - How do your sample statistics compare to the theoretical population parameters in this case?
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a recent survey was conducted where 431 of 643 males said they thought u.s. air travel is safer now than it was prior
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Translate the following arguments into symbolic form- If cigarette smokers are warned of the hazards of smoking and they continue to smoke, then they cannot sue tobacco companies for any resulting lung cancer or emphysema.
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Compute the mean of each of the 10 samples and list them. Explain how the mean of the means is equal, or not, to the population mean of the 100 listing prices from above.
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