Econometrics 2 Prep

All of the above

Regarding the National Economy data, which statement is accurate?

GDP, as constructed by Simon Kuznets, purposely excludes the underground economy and non-market production
Household savings is only part of overall savings in the economy
Per capita GDP is a superior indicator, compared to total GDP, when evaluating standard of living differences across the world
All of the above

All the above

The relatively higher ratio of black crimes may be the result of:

More blacks committing crimes relative to other racial groups
Lower arrest rates for crimes typically committed by whites
Racial bias in the policing and judicial system
All the above

Unadjusted, Adjusted

When evaluating the overall safety of an area a crime researcher would use data and when evaluating the effectiveness of policing efforts/ public policy they would use _.
Adjusted, Unadjusted
Unadjusted, Adjusted
Adjusted, Adjusted
Unadjusted, Unadjusted

National Crime Victimization Survey

Which source of crime data would be most likely to include child molestation by a family member?
National Incident Based Reporting System
Uniform Crime Report
National Crime Victimization Survey
A & B only

Most homicide victims know the perpetrator

Suggesting that gun control would reduce homicides in the U.S. could best be substantiated with which of the following data?
Most homicide victims know the perpetrator
Chicago has some of the strictest gun control laws in the U.S.
Half of Americans do not own a gunMany of the nation's guns are held illegally

This is a Binomial Distributionn = 18p = 0.50
mean = (18)(0.50) = 9 SD = 2.12
Binomial, E(x)=np=18*.5 =9 s(x)=[np(1-p)]^.5=2.12

A company hires management trainees for entry level sales positions. Experience indicates that half of them will still be employed at the end of 9 months. Assuming the company recently hired 18 management trainees, choose the appropriate distribution (Normal,Binomial, or Poisson) and based on your choice calculate the mean and standard deviation of that distribution (only one distribution is to be selected).

290-250 = 40 40/20 = 2z -score = .9772 1- .9772 = 0.022 8
1-.9772=.0028=. 28%

The number of students using the ATM on campus daily is normally distributed with amean of 250 and a standard deviation of 20. Based on this data, what is the probability that ATM usage exceeds 290 students in a day.

Mean = 5 Standard D = 2 25%= 0.25z= -0.675 -1.35 +5 = 3.653.65 hours
.67*2=1.34 5-1.34=3.66 hours

Only the 25% of finishers with the lowest time in the San Diego Marathon qualify for the Boston Marathon. If the distribution is normal with a mean of 5 hours and a standard deviation of 2 hours, what time must someone not exceed to qualify for the Boston Marathon?

The U.S. has a larger population than all three

"Liechtenstein, Monaco and Qatar are considerably richer compared to the U.S." Which of the following data metrics would be important to support this statement?

population growth is over estimated

Crime stats per 100,000 people can understate the crime rate in a city to the extent:

None of the above

Which of the following could be the cause of the lower crime rates of the 1990's?

Higher poverty regions of the country are likely to have higher crime rates

Which of the following can be most accurately deduced given the data on crime?

Robbery and murder

If a person was shot dead during a robbery, the NIBRS would record which of the following crimes?

Data that is adjusted to remove crime increases due to higher poverty rates

To evaluate the success of a new crime-fighting policy by the L.A. Police Department, an analyst would consider

Assume a normally distributed population has a mean of 10 and a standard deviation of 1.50; based on this, what is the probability of selecting a value between Z= -1.50 and Z=1.50?
a. 43.32%
b. 36.64%
c. 93.32%
d. 86.64%

d. 86.64%

The average high school teacher in the U.S. earns about $65,000 per year with a standarddeviation of $7,500. Given this information, what value would represent the cut-off for the top 20% of high school teachers (that is the 80th percentile).
a. $71,300
b. $58,700
c. $66,500
d. $104,100

a. $71,300

Which of the following is NOT a contemporary issue in researching education?
a. SAT scores falling over time.
b. Spending differences on education across the world's OECD countries.
c. Public school monopoly power.
d. Low graduation rates of U.S. high school students.

d. Low graduation rates of U.S. high school students.

A burglar enters a home in the middle of the night, accidentally confronting the owner who he shoots and kills. Which of the following is the most accurate when collecting data on the crime?
a. The Uniform Crime Report will show a burglary and a homicide.
b. National Incident Based Reporting System will show a burglary only.
c. The National Crime Victimization Survey will not show a homicide.
d. The Uniform Crime Report will show a homicide only.

d. The Uniform Crime Report will show a homicide only.

To gather data on the frequency of rape, a researcher would find the most credible data in the: a. Uniform Crime Report.
b. National Crime Victimization Survey.
c. National Incident-Based Reporting System.
d. All the above would have similar data on Rape.

b. National Crime Victimization Survey.

Lower crime rates in the U.S. post 1980s can be attributed to which of the following?
a. A small percentage of individuals owning fire-arms in the U.S.
b. Less women committing crime compared to men.
c. Welfare reform in the mid-90s increasing the safety net for women and single-mothers.
d. Less abortions after Roe vs. Wade passed in 1973
e. Improved policing efforts learned during the higher crime era of the 1980s

e. Improved policing efforts learned during the higher crime era of the 1980s.

When evaluating the overall safety of an area a crime researcher would use ________data and when evaluating the effectiveness of policing efforts/ public policy they would use _______.
a. Adjusted, Unadjusted
b. Unadjusted, Adjusted
c. Adjusted, Adjusted
d. Unadjusted, Unadjusted

b. Unadjusted, Adjusted

In evaluating the economic benefit of incarceration, a public policy researcher would need to consider:
a. The dollar cost of funding prisons.
b. The value of the decreased crime for all offenses an imprisoned inmate would have committed if she were on the street rather than in prison.
c. The value of the crime the incarcerated inmate committed prior to being in prison.
d. the opportunity cost from the lost wages an incarcerated inmate would incur while in prison.

b. The value of the decreased crime for all offenses an imprisoned inmate would have committed if she were on the street rather than in prison

Which of the following is most accurate in assessing the income and wealth in the U.S.?
a. The list of billionaires is a ranking based on annual income levels.
b. Wealth is often measured using the value of total assets rather than net worth.
c. Net Income is a measurement of assets owned by a particular individual.
d. Net worth is a measurement often used to assess the "richest" people in the country.

d. Net worth is a measurement often used to assess the "richest" people in the country.

Only 5% of finishers with the lowest time in the San Diego Marathon will qualify for the Boston Marathon. If the distribution is normal with a mean of 5 hours and a standard deviation of 2 hours, what time must someone not exceed to qualify for the Boston Marathon?
a. 5 hours
b. 8.3 hours
c. 1.7 hours
d. 3.3 hours

c. 1.7 hours

Assume the average engineer in the U.S. makes $120,000 per year with a standard deviation of $35,000. If the distribution of incomes is normally distributed and all samples of size 40 are taken, what will be the cut-off for the top 10% of sample means?
a. $90,600
b. $131,068
c. $164,800
d. $127,083

d. $127,083

The average time it took a sample of kids, aged 8-12, at local elementary school to complete a 20-question survey on pop culture was 11 minutes. The sample standard deviation was 2 minutes. No information was available about the larger population of kids at the school. To conduct inferential statistics using this sample we would use which of the following tables?
a. Z-table
b. T-table
c. Chi-Square tabled. Binomial table

b. T-table

Which of the following distribution is most appropriate for studying the proportion of the U.S. population that smokes?
a. Uninomial
b. Binomial
c. Poisson
d. Normale. Hypergeometric

b. Binomial

The average savings rate of 50 randomly selected residents of San Diego is determined to be 10%. Given this information, determine a 90% confidence interval for the population average savings rate.
a. 10% +/- 7%
b. 10% +/- 8%
c. 10% +/- 2%
d. 10% +/- 4%

a. 10% +/- 7%

The normal distribution can be used to infer from sample statistics to population parameters if which of the following is true?
a. The sample is greater than or equal to 25.
b.The population itself is normally distributed.
c. The sample is uniform.
d. The population is uniform.

b.The population itself is normally distributed.

Assume you collect a random sample of 20 from NYU graduate students. You find that the average age of your sample is 24 years old, and the sample standard deviation is 2 years, what is the margin of error using a t-value of 2.093?
a. .45
b. .94
c. 24.94
d. 24.45
e. Cannot compute with the information provided

b. .94

Assume you are conducting a research project that involves selecting 150 random students from SDSU, a campus with over 30,000 students with a symmetrical distribution of GPAs. You already know the population standard deviation to be at 1 grade point. If you are planning on using this sample to infer the GPA of SDSU students which of the following would be true?
a. You would need a larger sample to assume your population is normally distributed.
b. Your standard error would need to be adjusted using the finite population correction factor.
c. For a 95% confidence level, your standard error would be about 0.32 grade points
d. For a 95% confidence level, your margin of error would be 0.16 grade pointse. All the above

d. For a 95% confidence level, your margin of error would be 0.16 grade pointse. All the above