WorksheetsUnit 8 CFA Review
Total questions: 21
Worksheet time: 28mins
Find the measure of each angle indicated.
(a)
Classify the angle
right
obtuse
acute
straight
Classify the angle
right
acute
obtuse
straight
Classify the angle
acute
obtuse
right
straight
Classify the angle
acute
obtuse
right
straight
Name 2 sets of angles that are vertical
<MPN and <NPO
<MPN and <LPO
<MPL and <LPO
<MPL and <NPO
Name 2 sets of angles that are adjacent.
<MPL and <MPN
<MPL and <NPO
<LPO and <OPN
<LPO and <MPN
Solve for x.
15
16
18
19
Which equation could you use to solve for the value of x?
3x + 10 − 2x = 180
3x + 10 = 180
3x + 10 + 2x = 180
3x + 10 = 2x
An environmental advocacy group wants to know how residents intend to vote on a proposal to reduce bus service to certain neighborhoods in the city. They decide to conduct a survey.
Which describes a representative sample of the population for the situation?
a randomly selected group of members at a local gardening club
a randomly selected group of residents from the city’s voter registration records
a randomly selected group of workers at a factory that employs a large percentage of the city
a randomly selected group of residents in the neighborhoods affected by the proposal
The counselors at a camp are scheduling activities for family visitation day. They decide to conduct a survey to determine which activities campers would most like to share with their families.
Which describes a method for getting a sample that is both representative and random?
During the dinner hour, announce that any camper interested in doing so can collect and complete a survey.
During camp free time, ask every fifth camper in the arts and crafts hall to complete a survey.
During morning roll call, ask every tenth camper to complete a survey.
During camp free time, ask all campers down at the lake to complete a survey.
Select all the reasons why random samples are preferred over other methods of getting a sample.
If you select a random sample, you can determine how many people you want in the sample.
A random sample is always the easiest way to select a sample from a population.
A random sample is likely to give you a sample that is representative of the population.
A random sample is a fair way to select a sample, because each person in the population has an equal chance of being selected.
Edwardo is conducting a survey at his middle school to find out which sport students most enjoy playing. Which method will produce a random sample that gives the most objective idea of students' overall favorite sport?
Survey every 3rd student leaving football practice.
Survey 30 students at the basketball game Wednesday night.
Survey every 4th student in band.
Survey every 4th student entering the school building Tuesday morning.
What inference can you draw by comparing the interquartile ranges?
There is more variability in the number of days that Team A members trained because the IQR for Team A is greater than the IQR for Team B.
There is more variability in the number of days that Team B members trained because the IQR for Team B is greater than the IQR for Team A.
Team A members generally trained for more days than Team B members
Team B members generally trained for more days than Team A members
Litzy collects data from a random sample of 7th graders. Out of 40 respondents, 7 attend afterschool programs. Of the 200 7th graders attending Litzy's school, how many would be expected to attend afterschool programs?
(a)
Camira is comparing the growth of plants using two different fertilizers. Which statements about the box plots are true? Select all that apply.
The median is group B is greater.
According to the IQR, the variability in Group B is greater.
Group B contained the plant with the least amount of growth.
Group B contained the plant with the most amount of growth.
Group A has the greater median.
The captain of the basketball team wants to determine where the team should go for their end-of-season celebration. Which of the following is a representative sample? Select all that apply.
The students in her homeroom
Players whose names are randomly selected from a hat
The players in the starting lineup
All players over 5 feet tall
Every 5th player selected from an alphabetical roster of the team
A manager samples receipts of every fifth person in line. Out of 50 people, 4 had a mispriced item. If 600 people go to the store each day, how many can you expect to have a mispriced item?
50 people
80 people
48 people
12 people
Jenny randomly selects 20 boxes of crayons from the shelf and finds two boxes with at least one broken crayon. If the shelf holds 130 boxes, how many would you expect to have at least one broken crayon?
10 boxes
13 boxes
6.5 boxes
2 boxes
A middle school has 490 students. Mae surveys a random sample of 60 students and finds that 24 of them have dogs. How many students are likely to have dogs?
8 students
40 students
192 students
196 students
Solve for the value of x?
(a)
