EBK MACROECONOMICS
EBK MACROECONOMICS
5th Edition
ISBN: 8220106773925
Author: KRUGMAN
Publisher: MAC HIGHER
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Chapter 15, Problem 5P
To determine

Concept Introduction:

Monetary Policy: This policy is used by the central bank to control the liquidity of money from an economy to bring the economy to a stable condition. This is done through the management of interest rate and the money supply.

Expansionary Monetary Policy: This policy is used by the government to expand the money supply in the economy. Money supply is increased by reducing the interest rate, as lower interest rates will encourage people to borrow more.

Contractionary Monetary Policy: This policy is used by the government to contract the money supply from the economy. Money supply is reduced by increasing the interest rate, as higher interest rates will de-motivate people to borrow.

Inflationary gap: At the level of full employment, if the value of real GDP is greater than the value of the potential GDP, it leads to an emergence of the inflationary gap.

Recessionary gap: At the level of full employment, if the value of the potential GDP is greater than the value of the real GDP, it leads to an emergence of the recessionary gap.

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Wolfgang is a typical producer in a perfectly competitive piano industry (i.e., all other producers of pianos face the same costs as Wolfgang). The following production and cost data apply to the long run as well as the short run. Fixed costs (rent) are unrecoverable in the short run and are equal to $2400 per month. Variable costs consist of raw materials (wire, wood, plastic), which cost $1000 per piano, and the $40 per hour opportunity cost of Wolfgang's time. Wolfgang's production function is given in the table at right. Wolfgang will shut down if the price per piano is less than OA. $3000. B. $4000. O C. $5000. ○ D. None of the above. Pianos (Q) Hours (L) Raw Materials ( 0 0 0 1 100 1000 2 150 2000 3 240 3000 4 400 4000
P2 P₁ $ per unit Using the graph below, determine which statement is TRUE. MC1 SRATC₁ Q1 Q₂ MC2 SRATC2 LRAC ✓ LEA Quantity
Using the grapns below, wnicn snow the snort-run cost curves for 3 perfectly competitive firms in the same industry, determine whether the industry is in long-run equilibrium or not. Q Q Firm A QA MC ATC Output Firm B QB MC ATC Firm C MC ATC Output Output Qc If Firms A, B and C are in the same industry, is this industry in long-run equilibrium? ○ A. Yes, because P = MC = MR for each of the 3 firms. ○ B. No, because Firm A is not producing at a profit-maximizing level of output. ○ C. Yes, because all 3 firms are producing at their minimum average total cost. OD. The answer is uncertain since it's unknown whether the firms are producing at the minimum efficient scale or not. ○ E. No, because if the industry were in equilibrium, all 3 firms would be earning zero economic profits.
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