TABLE 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 DVD player made by the company over the past 12 months are satisfied with their products.
-Referring to Table 1-1, the possible responses to the question "How much time do you use the DVD player every week on the average?" are values from a
A) discrete numerical random variable.
B) continuous numerical random variable.
C) categorical random variable.
D) parameter.

Question

Quizplus · Accepted Answer

The possible responses to the question "How much time do you use the DVD player every week on the average?" are values on a continuous numerical scale (e.g., 1.5 hours, 6.25 hours, etc.). Therefore, the correct choice is a continuous numerical random variable (option B). A discrete numerical random variable would have a finite or countably infinite number of distinct values, while a categorical random variable would have non-numerical categories. A parameter is a numerical summary measure of a population, not a type of random variable.

TABLE 1-1 The Manager of the Customer Service Division of a Major