A forecaster used the regression equationQt = a + bt + c1D1 + c2D2 + c3D3and quarterly sales data for 1996 I - 2013 IV (t = 1, ..., 64) for an appliance manufacturer to obtain the results shown below. Q is quarterly sales, and D1, D2 and D3 are dummy variables for quarters I, II, and III. 
At the 5 percent level of significance, is there a statistically significant trend in sales?
A. Yes, because 2.14 > 0.05.
B. Yes, because 0.700 > 0.05.
C. No, because 0.0362 > 0.01.
D. Yes, because 0.0362 < 0.05.
E. both c and d
Answer: D
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A. Vicki’s marginal rate of substitution must be constant along her indifference curve. B. Vicki’s indifference curve must have a negative slope. C. the prices Vicki must pay for meat loaf and pizza are always the same. D. Vicki’s marginal utility from each good must be constant along her indifference curve.
Through correspondent banking, large banks provide services to small banks, including
A) loan guarantees. B) foreign exchange transactions. C) issuing stock. D) debt reduction.
The cost-revenue diagrams for a monopolist and a monopolistic competitor are similar except that the demand curve for the monopolistic competitor is flatter
a. True b. False Indicate whether the statement is true or false
Which statement is true?
a. The prime interest rate will be higher than the Federal funds rate b. The Federal funds rate and the prime interest rate will be the same c. The Federal funds rate will be higher than the prime interest rate d. The prime interest rate will be the same as the discount rate