Economics 221 Lecture 2: Test 2

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emeraldporpoise317

22 Dec 2018

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The power of a good or service to fulfil/satisfy a want. Marginal utility (change in utility) / (change in quantity) The longer you use a good, the less utility you get from it. Water, a necessity, is cheap; diamonds, a useless item, are. Exactly cover your accounting and opportunity costs. More than cover your accounting and opportunity costs. Don"t cover your accounting and opportunity costs. Fixed cost doesn"t change as output changes. All costs are variable in the long run. Average total cost (atc) = tc/q or afc+avc. Marginal cost (mc) = change in tc/change in quantity -> change in vc/change. Marginal cost is the first derivative or the total cost in q. Economies of scale: double all inputs, more than double output. Constant returns to scale: double all inputs, double output. Diseconomies of scale: double all inputs, output less than doubles. Economies of scope: efficiencies from selling a variety of products.

Related Questions

26. To the economist total cost includes

A. explicit and implicit costs.

B neither implicit nor explicit costs.

C. implicit, but not explicit, costs.

D. explicit, but not implicit, costs.

27. Accounting profits are typically

A. greater than economic profits because the former do not take explicit costs into account

B. equal to economic profits because accounting costs include all opportunity costs.

C. smaller than economic profits because the former do not take implicit costs into account.

D. greater than economic profits because the former do not take implicit costs into account.

28. Suppose that a business incurred implicit costs of $200,000 and explicit costs of $1 million in a specific year. If the firm sold 4,000 units of its output at $300 per unit, its accounting profits were

A. $100,000 and its economic profits were $0.

B. $200,000 and its economic profits were $0.

C. $100,000 and its economic profits were $100,000.

D. $0 and its economic loss was $200,000.

29. The basic difference between the short run and the long run is that

A. all costs are fixed in the short run, but all costs are variable in the long run.

B. the law of diminishing returns applies in the long run but not in the short run.

C. at least one resource is fixed in the short run, while all resources are variable in the long run.

D. economies of scale may be present in the short run but not in the long run.

30. The law of diminishing returns indicates that

A. as extra units of a variable resource are added to a fixed resource, marginal product will decline beyond some point.

B. because of economies and diseconomies of scale, a competitive firm's long-run average total cost curve will be U-shaped.

C. the demand for goods produced by purely competitive industries is downsloping.

D. beyond some point, the extra utility derived from additional units of a product will yield the consumer smaller and smaller extra amounts of satisfaction.

sapphirecrow883

Complete Table 1. Summarize your calculations and use Microsoft Excel.

Using Excel, draw one graph showing average fixed costs, average variable costs, average total costs, marginal revenue, and marginal costs.

Using the data in the table and on your graph, what is the profit maximizing, or loss minimizing level of output? Explain and justify your answers.

What is a normal profit? What is an economic profit? Explain your answer using examples. Are normal profits being earned in this example? Are economic profits present for this firm in this example? Explain your answers.

Given the data in the table and the graph, how could you determine or identify the optimal plant size?

What is the difference between explicit and implicit cost? Explain your answers.

How would we determine if a cost is a fixed cost or a variable cost?

Output	Average Fixed cost	Average Variable Cost	Average Total Cost	Marginal Cost	Price	Total Revenue	Marginal Revenue
0					$ 345.00
1	$ 180.00	$ 135.00	$ 315.00		$ 300.00
2	$ 90.00	$ 127.50	$ 217.50		$ 249.00
3	$ 60.00	$ 120.00	$ 180.00		$ 213.00
4	$ 45.00	$ 112.50	$ 157.50		$ 189.00
5	$ 36.00	$ 111.00	$ 147.00		$ 165.00
6	$ 30.00	$ 112.50	$ 142.50		$ 144.00
7	$ 25.71	$ 115.70	$ 141.41		$ 126.00
8	$ 22.50	$ 121.90	$ 144.40		$ 111.00
9	$ 20.00	$ 130.00	$ 150.00		$ 99.00
10	$ 18.00	$ 139.50	$ 157.50		$ 87.00

Question 16

If price is cut and demand is elastic, total revenue will rise because

		the change in quantity demanded is greater than the percent change in price.
		the percent change in quantity demanded is greater than the change in price.
		the percent change in quantity demanded is greater than the percent change in price.
		customers can't find substitutes.

3 points

Question 17

If price is cut and demand is inelastic, total revenue will fall because

		the change in quantity demanded is less than the percent change in price.
		the percent change in quantity demanded is less than the change in price.
		the percent change in quantity demanded is less than the percent change in price.
		customers can find substitutes.

3 points

Question 18

If something is addictive, then

price and demand are inversely related.

price elasticity of demand is equal to one.

demand is perfectly inelastic.

demand is perfectly elastic.

3 points

Question 19

In general, elasticities measure

		the change in quantity demanded when a product attribute changes.
		the change in consumer spending when income changes.
		the change in an attribute for a percentage change in price.
		the percentage change in the quantity demanded resulting from a fixed percentage change in some attribute.

3 points

Question 20

Average total costs are defined as

total costs divided by the change in output.

total costs divided by output.

the change in total costs when output changes.

average variable costs plus marginal costs.

3 points

Question 21

If a firm is experiencing economies of scale, then the long-run average cost curve is

falling.

rising.

horizontal.

shifting.

3 points

Question 22

If average total cost is rising

marginal cost is above average total cost.

marginal cost is rising.

marginal product is rising.

marginal cost is above average total cost and is falling.

3 points

Question 23

The period of time over which all inputs are variable is the

market horizon.

short run.

calendar year.

long run.

3 points

Question 24

The supply chain refers to

the supply curve.

the process of outsourcing.

the process of downsizing.

the process of creating and selling a product.

3 points

Question 25

When the capital (a fixed input) changes

short-run marginal costs rise.

short-run average total costs fall but do not shift.

labor inputs decline.

the short-run average total cost curve shifts.

3 points

Question 26

A market of price takers is called

perfectly competitive.

monopolistically competitive.

a monopoly.

an oligopoly.

3 points

Question 27

A market with a single seller is called

perfectly competitive.

monopolistically competitive.

a monopoly.

an oligopoly.

3 points

Question 28

A market that mainly stresses product differentiation is called

perfectly competitive.

monopolistically competitive.

a monopoly.

an oligopoly.

3 points

Question 29

Entry into a competitive market will continue until

economic profits are zero.

normal profits are zero.

when accounting losses are zero.

a. and b. are true

3 points

Question 30

Firms in an oligopoly

act independently.

engage in strategic behavior.

have perfect knowledge of the behavior of others.

openly collude.

Economics 221 Lecture 2: Test 2

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Related Questions

		price and demand are inversely related.
		price elasticity of demand is equal to one.
		demand is perfectly inelastic.
		demand is perfectly elastic.

		total costs divided by the change in output.
		total costs divided by output.
		the change in total costs when output changes.
		average variable costs plus marginal costs.

		marginal cost is above average total cost.
		marginal cost is rising.
		marginal product is rising.
		marginal cost is above average total cost and is falling.

		the supply curve.
		the process of outsourcing.
		the process of downsizing.
		the process of creating and selling a product.

		short-run marginal costs rise.
		short-run average total costs fall but do not shift.
		labor inputs decline.
		the short-run average total cost curve shifts.

		perfectly competitive.
		monopolistically competitive.
		a monopoly.
		an oligopoly.

		economic profits are zero.
		normal profits are zero.
		when accounting losses are zero.
		a. and b. are true

		act independently.
		engage in strategic behavior.
		have perfect knowledge of the behavior of others.
		openly collude.

		falling.
		rising.
		horizontal.
		shifting.