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In a study of the income of U.S factory workers, a random sample of 125 workers shows a sample mean of $29,000. Assume that the population standard deviation is $4,500.
A) Compute the 90%, 95%, and 99% confidence intervals for the unknown population mean.
B) Briefly discuss what happens to the width of the confidence interval estimate as the confidence level increases. Does this seem reasonable?
Suppose a monopolist faces a market demand curve given by P=220-3Q. Also, the marginal cost of production is constant and equal to 40. There are not fixed costs. What price should the monopolist charge in order to maximize profit as well as the dea..
The maintenance costs associated with an investment are $0 for the first 8 years and $ 700 per year thereafter. The investment has an infinite life. With interest at 9 % per annum, determine the present worth of the annual disbursements.
Suppose Alfred and Bart are originally paid $10 per hour at In N Out, and they originally choose to each work 8 hours per day. Explain how a wage decrease to $9 per hour could make Alfred choose to increase work hours per day, but could make Bart ..
the operation and maintatenance expenses 450 per year additionally , the hourly fuel expense for running the turbine is 7.5 dollar per hour and the turbine expected to operate 3000 hours eaach year . the cost of dismantling and disposing the turbi..
Assume that the price of the good is $1 in both periods. Suppose that the household decides to consume 26,000 in period 1 and 32, 000 in period 2. Now suppose that the interest rate falls to 50%, and the household decides not to borrow or lend at ..
Suppose that in 1984 the total output in a single-good economy was 10,000 buckets of chicken and the price of each bucket of chicken was $10. In 2005 the price per bucket of chicken was $20 and 22,000 buckets were produced.
A group of 20 doctors are considering forming a new medical group and have asked you to prepare a report on whether they should build a facility in an area within 30 miles of the downtown center of your 500,000 population city for $100 million dol..
a) the market value of all final goods and services produced withing Wrexington in 2006 is what B) Gross national product for Wrexington in 2006 is what c) Net national product for Wrexington in 2006 is what d)National income for Wrexington in 2006 i..
Engineering Economics 6th edition, Mountain Pass Canning Company has determined that any one of four machines can be used in one phase of its canning operation. The costs of the machines are estimated below, and all machines have a 10-year life.
Billy Penny is trying to determine how many units of two types of lawn mowers to produce each day. One of these is the Standard model, while the other is the Deluxe model. The profit per unit on the Standard model is $60, while the profit per unit..
Consider a consumer that chooses a bundle of leisure time (r) and a composite good (c) to maximize the utility function U(c, r) = c + 16(r1/2), where c is the number of units of the composite good consumed, and r is the number of hours of leisure ..
Assume the Following IS-LM Model E Expenditure sector Sp = C + I + G + NX C = 110 + (2/3)YD Calculate the equilibrium values of private domestic investment (I), tax revenues (TA), and real money demand (md). How much of private domestic investment (I..
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