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What is the difference between competitive industry and oligopolistic in terms of demand curve?
Business Economics, Economics
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Briefly explain the meaning of the t-test for regression analysis. How can the "rule of two" be used to evaluate t-ratios?
Assume that X is a Poisson random variable with μ = 22. Calculate the following probabilities. (Do not round intermediate calculations. Round your final answers to 4 decimal places.) (Please explain how you solved t ...
What is the best point estimate for the population's variance if the sample variance is 41.5? Round your answer to one decimal place, if necessary.
Test the following hypotheses of the difference in population means by using the following data (α = .10) H0: µ1- µ2=0, Ha: µ1- µ2 Sample 1 : X=51.3 σ2=52 n=31; Sample 2: X=53.2 σ2=60 n=32 Use the critical value method t ...
Let X be a continuous random variable. Suppose that we know that Pr(X 5), and how do you know? (Hint: X is not necessarily normally distributed, but you can still consider how much area is under the curve, no matter the ...
The increase in prescription drugs cost, increases the drug companies profit. Should there be restrictions to lower consumer cost and how much of their profit should be reinvested into research and development?
In a survey of first graders, their mean height was 49.9 inches with a standard deviation of 3.15 inches. Assuming the heights are normally distributed, what height represents the first quartile of these students?
A sample of 189 randomly selected students found that the proportion of students planning to travel home for Thanksgiving is 0.66. What is the Standard Deviation of the sampling distribution?
A manufacturer claims that their calculators are 6.800 inches long. A random sample of 39 of their calculators finds they have a mean of 6.812 inches with a standard deviation of 0.03 inches. At α=0.08, can you support t ...
How is the study of how firms' decisions about prices and quantities depend on the market conditions they face,the field of industrial organization, and the cost of production.
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