Exam 1: Defining and Collecting Data

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

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

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 _______.

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

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 _______.

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?

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.

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

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

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

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?