Question 1

SCENARIO 1-1
The manager of the customer service division of a major consumer electronics company is interested
in determining whether the customers who have purchased a Blu-ray player made by the company
over the past 12 months are satisfied with their products.
-Referring to Scenario 1-1, the possible responses to the question "How much time do you use the
Blu-ray player every week on the average?" are values from a

Accepted Answer

A)  discrete numerical variable. 
B)  continuous numerical variable. 
C)  categorical variable. 
D)  table of random numbers.

Question 2

The amount of alcohol consumed by a person per week will be measured on an interval scale.

Accepted Answer

A) True 
 B)False

Question 3

The Commissioner of Health in New York State wanted to study malpractice litigation in New
York.A sample of 31 thousand medical records was drawn from a population of 2.7 million
patients who were discharged during 2010.The proportion of malpractice claims filed from the
sample of 31 thousand patients is a _______.

Accepted Answer

The answer of The Commissioner of Health in New York...

Question 4

The grade level (K-12)of a student is an example of a nominal scaled variable.

Accepted Answer

A) True 
 B)False

Question 5

A summary measure that is computed to describe a characteristic of an entire population is
Called

Accepted Answer

A)  a parameter. 
B)  an ordered array. 
C)  a statistic. 
D)  a summary table.

Question 6

The Human Resources Director of a large corporation wishes to develop an employee benefits
package and decides to select 500 employees from a list of all (N = 40,000)workers in order to
study their preferences for the various components of a potential package.The 500 employees
who will participate in this study constitute the _______.

Accepted Answer

The answer of The Human Resources Director of a large...

Question 7

In purchasing an automobile, there are a number of variables to consider.The color of the car is
an example of a _______ variable.

Accepted Answer

The answer of In purchasing an automobile, there are a...

Question 8

True or False: A continuous variable may take on any value within its relevant range even though
the measurement device may not be precise enough to record it.

Accepted Answer

A) True 
 B)False

Question 9

The grade level (K-12)of a student is an example of a numerical variable.

Accepted Answer

A) True 
 B)False

Question 10

Which of the following yields a stratified sample?

Accepted Answer

A)  All students in a class are divided into groups of 15.One student is randomly chosen from the 1st group, the remaining observations are every 15th student thereafter. 
B)  The best 15 students, according to the opinion of the instructor, in a class are selected. 
C)  All students in a class are grouped according to their gender.A random sample of 8 is selected from the males and a separate random sample of 7 is drawn from the females. 
D)  The first 15 students in a class are selected without replacement.

Question 11

True or False: The professor of a business statistics class wanted to find out the mean amount of
time per week her students spent studying for the class.She divided the students into the left,
right and center groups according to the location they sat in the class that day.One of these 3
groups was randomly selected and everyone in the group was asked the mean amount of time per
week he/she spent studying for the class.This is an example of a cluster sample.

Accepted Answer

A) True 
 B)False

Question 12

The amount of calories contained in a 12-ounce package of cheese will be measured on a ratio
scale.

Accepted Answer

A) True 
 B)False

Question 13

To gather information on the preferences of instructors at universities on topics for a business
Statistics textbook that it will publish, a publishing company invited 10 faculty members who
Have adopted one of the textbooks that it has published.This is an example of a

Accepted Answer

A)  systematic sample 
B)  judgment sample 
C)  simple random sample 
D)  stratified sample

Question 14

SCENARIO 1-1
The manager of the customer service division of a major consumer electronics company is interested
in determining whether the customers who have purchased a Blu-ray player made by the company
over the past 12 months are satisfied with their products.
-Referring to Scenario 1-1, the possible responses to the question "In which year were you born?"
Are values from a

Accepted Answer

A)  discrete numerical variable. 
B)  continuous numerical variable. 
C)  categorical variable. 
D)  table of random numbers.

Question 15

SCENARIO 1-1
The manager of the customer service division of a major consumer electronics company is interested
in determining whether the customers who have purchased a Blu-ray player made by the company
over the past 12 months are satisfied with their products.
-Referring to Scenario 1-1, the possible responses to the question "What is your annual income
Rounded to the nearest thousands?" are values from a

Accepted Answer

A)  discrete numerical variable. 
B)  continuous numerical variable. 
C)  categorical variable. 
D)  table of random numbers.

Question 16

To obtain a sample of 10 books in the store, the manager walked to the first shelf next to the
Cash register to pick the first 10 books on that shelf.This is an example of a

Accepted Answer

A)  systematic sample 
B)  simple random sample 
C)  stratified sample 
D)  convenience sample

Question 17

True or False: If you randomly select a student from the first row of a business statistics class
and then every other fifth student thereafter until you get a sample of 20 students, this is an
example of a convenience sample.

Accepted Answer

A) True 
 B)False

Question 18

The Dean of Students conducted a survey on campus.SAT score in mathematics is an example
of a _______ numerical variable.

Accepted Answer

The answer of The Dean of Students conducted a survey...

Question 19

True or False: An electronic appliance chain gathered customer opinions on their services
using the customer feedback forms that are attached to the product registration forms.This is an
example of a convenience sample.

Accepted Answer

A) True 
 B)False

Question 20

The Dean of Students mailed a survey to a total of 400 students.The sample included 100
Students randomly selected from each of the freshman, sophomore, junior, and senior classes on
Campus last term.What sampling method was used?

Accepted Answer

A)  Simple random sample 
B)  Systematic sample 
C)  Stratified sample 
D)  Cluster sample

Exam 1: Defining and Collecting Data

The amount of alcohol consumed by a person per week will be measured on an interval scale.

The grade level (K-12)of a student is an example of a nominal scaled variable.

A summary measure that is computed to describe a characteristic of an entire population is Called

In purchasing an automobile, there are a number of variables to consider.The color of the car is an example of a _______ variable.

True or False: A continuous variable may take on any value within its relevant range even though the measurement device may not be precise enough to record it.

The grade level (K-12)of a student is an example of a numerical variable.

Which of the following yields a stratified sample?

The amount of calories contained in a 12-ounce package of cheese will be measured on a ratio scale.

To gather information on the preferences of instructors at universities on topics for a business Statistics textbook that it will publish, a publishing company invited 10 faculty members who Have adopted one of the textbooks that it has published.This is an example of a

To obtain a sample of 10 books in the store, the manager walked to the first shelf next to the Cash register to pick the first 10 books on that shelf.This is an example of a

True or False: If you randomly select a student from the first row of a business statistics class and then every other fifth student thereafter until you get a sample of 20 students, this is an example of a convenience sample.

The Dean of Students conducted a survey on campus.SAT score in mathematics is an example of a _______ numerical variable.

True or False: An electronic appliance chain gathered customer opinions on their services using the customer feedback forms that are attached to the product registration forms.This is an example of a convenience sample.

The Dean of Students mailed a survey to a total of 400 students.The sample included 100 Students randomly selected from each of the freshman, sophomore, junior, and senior classes on Campus last term.What sampling method was used?