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Concepts
Interpret the regression equation that you calculated in the prior section. What is the meaning of y = 6.80+0.62x?
Many people have expressed concern that more and more of our food is grown on massive, factory-style corporate farms and that U.S. agricultural subsidies are contributing to this trend.
Suppose that I had data on farm subsidies and farm size. I regress farm size (measured by gross sales in dollars) on subsidy payments received in the calendar year. I find that a farm with 10 cents more in subsidies has on average 4 cents more in sales.
a) State carefully the ceteris paribus assumption in this case. Do you think this simple regression of Y on X satisfies that assumption? Why or why not? What are some of the other factors that explain our incomes, and do you think these might vary as parental income varies across different families? Explain.
b) Pick one of the "other factors" mentioned in (a). Let's call it x2. Suppose you augmented the simple regression with x2. How do you think this would affect the estimate of the coefficient on farm subsidies received (β1)?
c) Imagine an experiment where a randomly selected group of farms are given a 10% increase in subsidy. In this case, would it matter whether x2 was included in the regression? Explain.
a company uses solid waste for fuel in theproduction of electricity. The cost Y in dollars per hour toproduce electricity is: Y=12 + 0.3X +0.27X2 ,where X is in megawatts.
Analyzing domestic market for corn Qd= 1800 -125P-10pw Qs = 440 + 165P Quantities in millions of bushels; prices are measured in dollars per unit. Pw is the price of wheat. Pw = $20, calculate the equilibrium price and quantity of corn.
Suppose that two firms compete in quantities (Cournot) in a market in which demand is described by P = 260 - 2Q. Each firm incurs no fixed costs but has a constant marginal cost of 20. a. What is the one-period Nash equilibrium market price
The university is selling bonds to cover the cost of a new power plant for UAF. The face value on the bonds is $100 million and is to be repaid in 10 years with coupons paid annually. There is a 15% chance the effective interest rate will be 5%, 2..
Missy Walters owns a mail-order business specializing in clothing, linens, and furniture for children. She is considering offering her customers a discount on shipping charges for furniture based on the dollar-amount of the furniture order.
The Crockett Land Winery must replace its present grape-pressing equipment. The two alternatives are the Quik-Skwish and the Stomp-Master. The annual operating costs increase by 12% each year as the machines age. If the interest rate is 9%, which ..
suppose the airline is offered $4,000.00 per week to haul freight along the route for a local firm. This will mean replacing one of the weekly passenger flights with a freight flight (at the same operating cost). Should the airline carry freight f..
Andre walks Julia's dog once a day for $50 per week. Julia values this service at $60 per week, while the op-portunity cost of Andre's time is $30 per week. The government places a tax of $35 per week on dog walkers. After the tax, what is total s..
1985/the cocacola comp was faced with soaring prices for sugar cane, 1-cent increase in the price of sugar cane raised its total cost by$20million.Rather than raise the price, comp looke for a cheaper input and replced cane suger with corn sugar.
At the end of that time a mild recesion slowed the development so the parties signed another contract for $190,000 per year for 2 more years. Determine the present worth of the two contracts at an interest rate of 10% per year.
Assume that GDP is $6,000, personal disposable income is $5,100 and the government budget deficit is $200. Consumption is $3,800 and the trade deficit is $100. How large is national saving
Mac Rowe doesn't sweat the petty stuff. In fact, he just cannot detect small differences. He consumes two goods, x and y. He prefers the bundle (x,y) to the bundle (x',y') if and only if (xy - x'y' > 1) . Otherwise he is indifferent between the tw..
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