CAIA SAMPLE EXAM 1 SCRIPT 2026 PRACTICE
SOLUTION A+
◉ The mean family income in Not Just Anywhere, Texas is $85,200.
The median family income is $65,125. A marketing company would
like to use a Z score and The Standard Normal Table to find the
expected percentage of families in this city with incomes over
$100,000. This is appropriate. Answer: false
◉ To be accepted into an honor society, students must have GPAs in
the top 10% of the school. If the mean GPA is 2.78 and the standard
deviation is .33, a GPA of 3.25 would qualify. Answer: true
◉ A recent UNT graduate took both her state's merit exams for the
positions of social worker and employment counselor. Her Z score
on the social worker test was -.5, and her Z score on the employment
counselor test was 1.5. Which of the following statements is a
correct conclusion about the graduate's performance? Answer:
neither statement is the correct conclusion
◉ The MMPI test is used extensively by psychologists to provide
information on personality traits and potential problems of
individuals undergoing counseling. The test measures nine primary
dimensions of personality, with each dimension represented by a
scale normed to have a mean score of 50 and a standard deviation of
,10 in the adult population. One primary scale, the Paranoia Scale,
measures paranoid tendencies. Harry scores 69 on the Paranoia
Scale. What percentage of persons is expected score lower than
Harry on this scale? Answer: 97.1%
◉ The distribution of family size in a particular tribal society has a
mean, µ, of 5.2 with a standard deviation, σ, of 3.0. These population
values are unknown to an anthropologist studying the society, who
samples families to estimate mean family size. For a random sample
of 36 families, she obtains a mean of 4.6 and a standard deviation of
3.2 What is the sampling error? Answer: 0.6
◉ A researcher questioned 45 incoming freshmen about their
experiences of drinking alcohol and used these responses to
estimate the drinking behavior of the entire freshman class. In this
example, the 45 interviewees were the _____ and the _____ was the
population. Answer: sample/freshmen class
◉ You've been asked to determine the percentage of UNT students
who would support gay marriage. You want to take a random sample
of your fellow students to make the estimate. You every 10th student
passing by Willis Library. This is a random sample. Answer: false
◉ The table below presents information about average household
size for two groups of persons in the United States in 2000. In this
table, what is the sampling error? Answer: 0.06
, ◉ According to the Central Limit Theorem, if a variable does not
have a normal population distribution, the shape of the sampling
distribution of the mean Answer: we will not be normal unless
sample size is large
◉ You've been asked to determine the percentage of UNT students
who would support gay marriage. You want to take a random sample
of your fellow students to make the estimate. You ask all students
eating lunch in Bruce Cafeteria on a Tuesday at 12:30PM. This is a
random sample. Answer: false
◉ The Law School Admission Test (LSAT) is designed so that test
scores are normally distributed in the population with a mean in
2005 of 154.35 with a standard deviation of 5.62. Thus, in the case
of a sample of test takers of size 10, the sampling distribution of the
mean would be normal. Answer: true
◉ The table below presents information about average household
size for two groups of persons in the United States in 2000. Which
one of the following figures from the table is a population
parameter? Answer: 2.59 per household
◉ In simple random sampling, Answer: each case in the population
has an equal chance of being selected
SOLUTION A+
◉ The mean family income in Not Just Anywhere, Texas is $85,200.
The median family income is $65,125. A marketing company would
like to use a Z score and The Standard Normal Table to find the
expected percentage of families in this city with incomes over
$100,000. This is appropriate. Answer: false
◉ To be accepted into an honor society, students must have GPAs in
the top 10% of the school. If the mean GPA is 2.78 and the standard
deviation is .33, a GPA of 3.25 would qualify. Answer: true
◉ A recent UNT graduate took both her state's merit exams for the
positions of social worker and employment counselor. Her Z score
on the social worker test was -.5, and her Z score on the employment
counselor test was 1.5. Which of the following statements is a
correct conclusion about the graduate's performance? Answer:
neither statement is the correct conclusion
◉ The MMPI test is used extensively by psychologists to provide
information on personality traits and potential problems of
individuals undergoing counseling. The test measures nine primary
dimensions of personality, with each dimension represented by a
scale normed to have a mean score of 50 and a standard deviation of
,10 in the adult population. One primary scale, the Paranoia Scale,
measures paranoid tendencies. Harry scores 69 on the Paranoia
Scale. What percentage of persons is expected score lower than
Harry on this scale? Answer: 97.1%
◉ The distribution of family size in a particular tribal society has a
mean, µ, of 5.2 with a standard deviation, σ, of 3.0. These population
values are unknown to an anthropologist studying the society, who
samples families to estimate mean family size. For a random sample
of 36 families, she obtains a mean of 4.6 and a standard deviation of
3.2 What is the sampling error? Answer: 0.6
◉ A researcher questioned 45 incoming freshmen about their
experiences of drinking alcohol and used these responses to
estimate the drinking behavior of the entire freshman class. In this
example, the 45 interviewees were the _____ and the _____ was the
population. Answer: sample/freshmen class
◉ You've been asked to determine the percentage of UNT students
who would support gay marriage. You want to take a random sample
of your fellow students to make the estimate. You every 10th student
passing by Willis Library. This is a random sample. Answer: false
◉ The table below presents information about average household
size for two groups of persons in the United States in 2000. In this
table, what is the sampling error? Answer: 0.06
, ◉ According to the Central Limit Theorem, if a variable does not
have a normal population distribution, the shape of the sampling
distribution of the mean Answer: we will not be normal unless
sample size is large
◉ You've been asked to determine the percentage of UNT students
who would support gay marriage. You want to take a random sample
of your fellow students to make the estimate. You ask all students
eating lunch in Bruce Cafeteria on a Tuesday at 12:30PM. This is a
random sample. Answer: false
◉ The Law School Admission Test (LSAT) is designed so that test
scores are normally distributed in the population with a mean in
2005 of 154.35 with a standard deviation of 5.62. Thus, in the case
of a sample of test takers of size 10, the sampling distribution of the
mean would be normal. Answer: true
◉ The table below presents information about average household
size for two groups of persons in the United States in 2000. Which
one of the following figures from the table is a population
parameter? Answer: 2.59 per household
◉ In simple random sampling, Answer: each case in the population
has an equal chance of being selected
