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1. A realtor is interested in comparing the asking prices of homes in Philadelphia and Baltimore. A random sample of 21 listings in Philadelphia resulted in a sample mean price of $185,900 with a sample standard deviation of $2,300. A random sample of 26 listings in Baltimore resulted in a sample mean price of $184,500 with a sample standard deviation of $1,750. At a 5% level of significance, test to see if there is any difference in the mean asking prices in the two cities.
2. Two processes in a manufacturing line are performed manually: Operation "A" and Operation "B". A random sample of 50 different assemblies using "A" shows a sample mean time of 8.05 minutes with a sample standard deviation of 1.36 minutes. A random sample of 38 different assemblies using "B" shows a sample mean time of 7.26 minutes and a sample standard deviation of 1.06 minutes. At a 5% level of significance, can you conclude that there is no difference in the average assembly times?
Two cournot duopolists produce in a market with a demand P(Q)=100-Q. The marginal cost for Firm 1 is constant and equals 10. The marginal cost for Firm 2 is constant and equals 25. The two firms want to merge, which would leave a monopoly.
Calculate the industry price necessary to induce short-run firm supply of 5,000, 10,000, and 15,000 tons of sweet corn. Assume that MC > AVC at every point along the firm's marginal cost curve and that total costs include a normal profit.
1. Find average cost and average for each of these total cost curves: a. TC = 10 + 2Q, b. TC = 5 + 3Q, c. TC = 20 - Q + 2Q2, 2.A firm's marginal cost of production is at $5 per unit, and its fixed costs are $20. Draw its total, average, and average..
A bond fund manager has a four year time horizon, and is considering two bonds. The first is a 15-year to maturity bond with a 6.60% coupon rate, paid annually. The price of this bond today is 100% of face value. The second bond is a 20-year to ma..
Suppose that Glitter Gulch, a gold mining firm, increased its sales revenues on newly mined gold from $75 million to $150 million between one year and the next. Assuming that the price of gold increased by 100 percent over the same period.
The company you work for has a high speed 5-axis milling machine which was purchased 5 years ago for $200,000 and has a 10 year life. This machine is currently idle and can be used to make a product designed
The table below presents the PPC of Euphoria. Point Computers Food A 0 18 B 120 14 C 200 8 D 240 0 Calculate the opportunity costs of food in terms of computers for all the points in the above table. Does the law of increasing relative cost holds
The size of the labor force in a community is 800, and 720 of these folks are gainfully employed. In this community, 200 people over the age of 16 do not have a job and are not looking for work. In addition, 100 people in the community are under t..
Use the rule for determining optimal purchases to decide how many hours you should study each subject. Treat each point on an exam as 1 unit of utility and assume that you consider an extra point on an economics exam to have the same value as an e..
What generalization can be drawn from the completed table There is insufficient data to make a generalization OR Bond price and interest rate are inversely related OR Bond price and interest rate are not related OR Bond price and interest rate are..
Suppose a depositor comes to the bank and withdraws $200 in cash. Show the banks new balance sheet assuming the bank obtains the cash by drawing down its reserves. Does the bank now hold excess reserves Is it meeting the required reserve ratio
The plan is to make an initial deposit today and then deposit an additional $2,500 a year for the next three years, starting one year from today. The account pays a 3% rate of return. How much does the Bluebird Company need to deposit today.
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