Concept explainers
Many of Exercises 29-40 are similar or identical to ones in preceding exercise sets. Use duality to answer them.
Politics The political pollster Canter is preparing for a national election. It would like to poll at least 1.500 Democrats and 1,500 Republicans. Each mailing to the East Coast gets responses from 100 Democrat and 50 Republican. Each mailing to the Midwest gets responses from 100 Democrats and 100 Republican. Each mailing to the West Coast gets responses from 50 Democrats and 100 Republicans. Mailings to the East Coast cost $40 each to produce and mail, mailings to the Midwest cost 60 each, and mailings to the West Coast cost $50 each. How many mailings should Canter send to each area of the country to get the responses it needs at the least possible cost? What will it cost? What are the shadow costs of a Democratic response and of a Republican response?

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Chapter 5 Solutions
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- A biologist is investigating the effect of potential plant hormones by treating 20 stem segments. At the end of the observation period he computes the following length averages: Compound X = 1.18 Compound Y = 1.17 Based on these mean values he concludes that there are no treatment differences. 1) Are you satisfied with his conclusion? Why or why not? 2) If he asked you for help in analyzing these data, what statistical method would you suggest that he use to come to a meaningful conclusion about his data and why? 3) Are there any other questions you would ask him regarding his experiment, data collection, and analysis methods?arrow_forwardBusinessarrow_forwardAnswer first questionarrow_forward
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