13) Which of the following is likely to happen if the government imposes a price control at $60, when the demand curve shifts to D2? A) There will be a shortage of 15 units of the good in the market. B) There will be a surplus of 15 units of the good in the market. C) There will be a shortage of 10 units […]
21) What is logrolling? A) a situation where a policymaker votes to approve a bill in exchange for favorable votes from his colleagues on other bills B) a situation where policymakers transfer resources from those voters who are unlikely to have a huge impact on the political outcome to those who contribute to political campaigns C) a situation where a policymaker accepts bribes […]
61) Refer to Figure 2-4. Consider the following events: a.a decrease in the unemployment rate b.general technological advancement c.an increase in consumer wealth Which of the events listed above could cause a movement from V to X? A) a only B) a and b only C) b and c only D) a, b, and c 62) Refer to Figure 2-4. Consider the following events: […]
11. Which type of sample is selected to reflect the demographic characteristics of the population of interest? A. Convenience samples B. Representative samples C. Random samples D. Cumulative samples 12. The demographic characteristics of her married subjects are not important for Mary’s research question—she will accept anyone who is willing to participate. Which sample is most appropriate for her research on intimate relationships? A. Representative sample B. Random sample C. Convenience […]
21) Unions ________ free trade and ________ a higher minimum wage. A) favor; favor B) are neutral toward; oppose C) favor; oppose D) oppose; favor E) oppose; oppose 22) Which of the following is a method used by unions to increase the demand for their members’ labor? A) Support import restrictions. B) Decrease the marginal product of union members. C) Increase imported goods and […]
31) Which of the following statements is false? A) Not all individuals in both countries are made better off as a result of international trade. B) Within each country, some individuals are made better off as a result of international trade, but one of the countries will be worse off overall. C) Although some individuals may not be made better off as a result […]
4.4 Integrative Questions 1) Consider the market for bread. If the price of wheat rises, then the A) demand curve for bread shifts leftward. B) supply curve of bread shifts leftward. C) price of bread falls. D) equilibrium quantity of bread increases. E) demand curve for bread shifts rightward. 2) Consider the market for turkeys. In the United States, because of Thanksgiving in the […]
21) If the world price of a good is below the no-trade domestic price, a country A) will benefit from exporting the good. B) will benefit from importing the good. C) cannot benefit from trade. D) has a comparative advantage in the production of that good. E) will not engage in trade for that good. 22) Suevania opens its doors to trade with Barvania. […]
41) ________ is defined as a market outcome in which the marginal benefit to consumers of the last unit produced is equal to the marginal cost of production, and in which the sum of consumer surplus and producer surplus is at a maximum. A) Economic efficiency B) Consumer efficiency C) Producer efficiency D) Deadweight efficiency 42) If, in a competitive market, marginal […]
191.SupposeOPECsucceedsinraisingworldoilpricesby300percent.Thispriceincreasecausesinventorstolookatalternativesourcesoffuelforinternal-combustionengines.Ahydrogen-poweredengineisdevelopedwhichischeapertooperatethangasolineengines.WhichproblemsintheconstructionoftheCPIdoesthissituationrepresent? a.substitutionbiasandintroductionofnewgoods b.introductionofnewgoodsandunmeasuredqualitychange c.substitutionbiasandunmeasuredqualitychange d.incomebiasandsubstitutionbias 192.Whichoftheseeventswouldcausetheconsumerpriceindextooverstatetheincreaseinthecostofliving? a.Carmakersbenefitfromanewtechnologythatallowsthemtosellhigher-qualitycarstoconsumerswithnoincreaseinprice. b.Energypricesdecrease,andconsumersrespondbybuyingmoregasandelectricity. c.Anewgoodisintroducedthatrenderscellulartelephonesinferiorandobsolete. d.Alloftheabovearecorrect. 193.Whichofthefollowingstatementsbestrepresentseconomists’beliefsaboutthebiasintheCPIasameasureofthecostofliving? a.EconomistsagreethatthebiasintheCPIisaveryseriousproblem. b.EconomistsagreethatthebiasintheCPIisnotaseriousproblem. c.EconomistsagreeontheseverityoftheCPIbias,butthereisstilldebateonwhattodoaboutit. d.ThereisstilldebateamongeconomistsontheseverityoftheCPIbiasandwhattodoaboutit. 194.Severalstudiesinthe1990sconcludedthattheconsumerpriceindexoverstatedinflationbyabout a.3percentagepointsperyear,andthatnumberofpercentagepointslikelystillappliesnow. b.3percentagepointsperyear,butrecentimprovementstotheCPIprobablyhavereducedtheoverstatementofinflationtosomethinglessthan3percentagepoints. c.1percentagepointperyear,andthatnumberofpercentagepointslikelystillappliesnow. d.1percentagepointperyear,butrecentimprovementstotheCPIprobablyhavereducedtheoverstatementofinflationtosomethinglessthan1percentagepoint 195.RecentchangesinmethodsusedtocomputetheCPIhavemadethe a.upwardbiasintheCPIinflationratemoreseverethanitusedtobe. b.upwardbiasintheCPIinflationratelessseverethanitusedtobe. c.downwardbiasintheCPIinflationratemoreseverethanitusedtobe. d.downwardbiasintheCPIinflationratelessseverethanitusedtobe. 196.Theproblemswithusingtheconsumerpriceindexasameasureofthecostoflivingareimportantbecause a.eventheappearanceofhighratesofinflationcausevoterstobecomedisenchanted. b.politicianshavemanipulatedthemeasurementproblemstotheiradvantage. c.manygovernmentprogramsusetheCPItoadjustforchangesintheoveralllevelofprices. d.ifthepricelevelisoverstated,consumerswillbetakenadvantageofbysellersofconsumergoods. 197.TheGDPdeflatorreflectsthe a.levelofpricesinthebaseyearrelativetothecurrentlevelofprices. b.currentlevelofpricesrelativetothelevelofpricesinthebaseyear. c.levelofrealoutputinthebaseyearrelativetothecurrentlevelofrealoutput. d.currentlevelofrealoutputrelativetothelevelofrealoutputinthebaseyear. 198.Twoalternativemeasuresoftheoveralllevelofpricesare a.theinflationrateandtheconsumerpriceindex. b.theinflationrateandtheGDPdeflator. c.theGDPdeflatorandtheconsumerpriceindex. d.thecostoflivingindexandnominalGDP. 199.TheCPIandtheGDPdeflator a.generallymovetogether. b.generallyshowdifferentpatternsofmovement. c.alwaysshowidenticalchanges. d.alwaysshowdifferentpatternsofmovement. 200.AnimportantdifferencebetweentheGDPdeflatorandtheconsumerpriceindexisthat a.theGDPdeflatorreflectsthepricesofgoodsandservicesboughtbyproducers,whereastheconsumerpriceindexreflectsthepricesofgoodsandservicesboughtbyconsumers. b.theGDPdeflatorreflectsthepricesofallfinalgoodsandservicesproduceddomestically,whereastheconsumerpriceindexreflectsthepricesofgoodsandservicesboughtbyconsumers. c.theGDPdeflatorreflectsthepricesofallfinalgoodsandservicesproducedbyanation’scitizens,whereastheconsumerpriceindexreflectsthepricesofallfinalgoodsandservicesboughtbyconsumers. d.theGDPdeflatorreflectsthepricesofallfinalgoodsandservicesboughtbyproducersandconsumers,whereastheconsumerpriceindexreflectsthepricesofallfinalgoodsandservicesboughtbyconsumers.
1
Homework 1
For problems 1 through 4, explain why the code as shown is almost certainly not what the programmer
intended, and how it should be fixed to work the way the programmer probably had in mind.
1. (5 pts) What is wrong with the following program and how should it be fixed?
1 public class MyClassA {
2 int v = 12;
3
4 public MyClassA (int pV) {
5 v = pV;
6 }
7
8 public static void main (String args []) {
9 MyClassA m = new MyClassA ();
10 } // end main
11 } // end class MyClassA
2. (5 pts) What is wrong with the following program and how should it be fixed?
1 public class MyClassB {
2 int v = 12;
3
4 public void MyClassB (int pV) {
5 v = pV;
6 }
7
8 public static void main (String args []) {
9 MyClassB m = new MyClassB (23);
10 } // end main
11 } // end class MyClassB
3. (5 pts) What is wrong with the following program and how should it be fixed?
1 public class MyClassD {
2 public static void main (String args []) {
3 MyClassC m = new MyClassC (23);
4 } // end main
5 } // end class MyClassD
6
7 class MyClassC {
8 int v = 12;
9
10 public MyClassC (int pV) {
11 int v = pV;
12 }
2
13
14 } // end class MyClassC
4. (5 pts) What is wrong with the following program and how should it be fixed?
1 public class MyClassE {
2 public static void main (String args []) {
3 MyClassF m = new MyClassF (23);
4 } // end main
5 } // end class MyClassE
6
7 class MyClassF {
8 int v = 12;
9
10 private MyClassF (int pV) {
11 v = pV;
12 }
13
14 } // end class MyClassF
5. (5 pts) Given all the problems identified in problems 1 through 4, explain in detail why the following
code works, ie, compiles without errors or warnings.
1 public class MyClassG {
2 public static void main (String args []) {
3 MyClassH m = new MyClassH (23, true);
4 } // end main
5 } // end class MyClassG
6
7 class MyClassH {
8 int v = 12;
9
10 public MyClassH (int x, boolean b) {
11 this (x);
12 }
13
14 private MyClassH (int pV) {
15 v = pV;
16 }
17
18 } // end class MyClassH
6. (5 pts) Explain why the following class hierarchy is not reasonable:
• DefenseDepartment
o General
§ Private
3
7. (5 pts) Give at least one example of a reasonable field for each of the following classes in the following
class hierarchy. Be sure that the field is at the right level in the hierarchy.
• Vehicle
o Car
o Airplane
§ Passenger
§ Fighter
§ Bomber
o SpaceShip
8. (5 pts) Give at least one example of a reasonable method for each of the following classes in the
following class hierarchy. Be sure that the method is at the right level in the hierarchy. Constructors,
getters and setters don't count for this problem.
• Vehicle
o Car
o Airplane
§ Passenger
§ Fighter
§ Bomber
o SpaceShip
9. (5 pts) Please provide an example of an encapsulation and an inheritance relationship? Explain
10. (5 pts) Present reasonable parent and child classes for the class Tree (the biological kind). Give a
short explanation for why the classes you are proposing are in good parent-child relationships.
Grading Rubric:
Attribute Meets Does not meet
Problem 1 5 points
Explains why the code as shown is
almost certainly not what the
programmer intended.
Explains how it should be fixed to
work the way the programmer
probably had in mind.
0 points
Does not explain why the code as shown is
almost certainly not what the programmer
intended.
Does not explain how it should be fixed to
work the way the programmer probably
had in mind.
Problem 2 5 points
Explains why the code as shown is
almost certainly not what the
programmer intended.
Explains how it should be fixed to
work the way the programmer
probably had in mind.
0 points
Does not explain why the code as shown is
almost certainly not what the programmer
intended.
Does not explain how it should be fixed to
work the way the programmer probably
had in mind.
4
Problem 3 5 points
Explains why the code as shown is
almost certainly not what the
programmer intended.
Explains how it should be fixed to
work the way the programmer
probably had in mind.
0 points
Does not explain why the code as shown is
almost certainly not what the programmer
intended.
Does not explain how it should be fixed to
work the way the programmer probably
had in mind.
Problem 4 5 points
Explains why the code as shown is
almost certainly not what the
programmer intended.
Explains how it should be fixed to
work the way the programmer
probably had in mind.
0 points
Does not explain why the code as shown is
almost certainly not what the programmer
intended.
Does not explain how it should be fixed to
work the way the programmer probably
had in mind.
Problem 5 5 points
Given all the problems identified in
problems 1 through 4, explains in
detail why the code works, ie,
compiles without errors or warnings.
0 points
Given all the problems identified in
problems 1 through 4, does not explain in
detail why the code works, ie, compiles
without errors or warnings.
Problem 6 5 points
Explains why the class hierarchy is
not reasonable.
0 points
Does not explain why the class hierarchy is
not reasonable.
Problem 7 5 points
Gives at least one example of a
reasonable field for each of the
classes.
The field is at the right level in the
hierarchy.
0 points
Does not give at least one example of a
reasonable field for each of the classes.
The field is not at the right level in the
hierarchy.
Problem 8 5 points
Gives at least one example of a
reasonable method for each of the
classes.
The method is at the right level in the
hierarchy.
Does not include constructors,
getters and setters.
0 points
Does not give at least one example of a
reasonable method for each of the
classes.
The method is not at the right level in the
hierarchy.
Includes constructors, getters and setters.
Problem 9 5 points
Explains inheritance and
encapsulation correctly and in
0 points
Does not explain inheritance and
encapsulation correctly and in sufficient
detail given the example provided.
5
sufficient detail given the example
provided.
Problem 10 5 points
Presents reasonable parent and child
classes for the class Tree.
Gives a short explanation for why the
classes you are proposing are in good
parent-child relationships.
0 points
Does not present reasonable parent and
child classes for the class Tree.
Does not give a short explanation for why
the classes you are proposing are in good
parent-child relationships.
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