What size samples should she take
A scientist wants a confidence interval of 90% and a margin of error of +-2 for a mean of a Normal population with σ =10. What size samples should she take?
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A population is Normally distributed and has a σ = 24. Samples of size 25 have a sample mean of 100. Find the 90% confidence interval for the population mean.
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Regardless of whether the item is subcontracted or produced internally, there is a 50% chance that 50,000 units will be sold, and a 50% chance that 100,000 units will be sold. Using decision trees and EMV, what is the company's best choice? You do
A survey of 1600 Democrats and 900 Republicans (all randomly selected) showed at 90% confidence a margin of error of +- 2 for Democrats and +- 3 for Republicans. Why is there a difference?
The price received by sellers in a market will decrease if the government.A. imposes a binding price floor in that market. B. decreases a binding price ceiling in that market. C. decreases a
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