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A random sample of the closing stock prices in dollars for a company in a recent year is listed below. Assume that sigma σ is ?$2.59. Construct the 90?% and 99?% confidence intervals for the population mean. Interpret the results and compare the widths of the confidence intervals.
19.82 22.86 20.72 18.71 16.06 22.99 17.09 21.85
15.07 15.25 21.89 19.49 16.44 22.49 17.18 17.58
(1) The? 90% confidence interval is?
(2) The? 99% confidence interval is?
(3) Which statement below interprets the results? correctly?
(4) Which interval is? wider?
A machine that has been used for one year has a salvage value of $10,000 now , which will drop by $2000 per year. The maintenance costs for the next 4 years are $1250, $1450, $1750 and $2250. Determine the marginal cost to extend service for each of ..
Which of the following is a characteristic of civil law?
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Rather than look at the effect on the "competitiveness" of the dominant firm, should the Commission have not also considered the effect of the dominant firm's conduct on efficiency?
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