A Survey Asked 851 People How Many Times Per Week

question 7

Multiple Choice

A survey asked 851 people how many times per week they dine out at a restaurant. The results are presented in the following table.
$\begin{array}{cc}\hline \text { Number of Times } & \text { Frequency } \\\hline 0 & 104 \\1 & 244 \\2 & 242 \\3 & 142 \\4 & 62 \\5 & 22 \\6 & 27 \\7 & 8 \\\hline \text { Total } & 851\end{array}$

Consider the 851 people to be a population. Let $X$ be the number of times per week a person dines out for a person sampled at random from this population. Find the probability that a person does not dine out at all.

• A) 0
• B) 0.409
• C) 0.122
• D) 0.287

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Definitions:

B Data

Behavioral data in psychology, which consists of observations about an individual's behavior in natural or staged scenarios, often used for assessing personality.

Face Validity

The degree to which an assessment instrument, such as a questionnaire, on its face appears to measure what it is intended to measure. For example, a face-valid measure of sociability might ask about attendance at parties.

Exploratory Factor Analysis

A statistical technique used to identify potentially underlying variable structures within a set of observed variables without a preconceived structure in mind.

Confirmatory Factor Analysis

A statistical method used to test whether a set of observed variables represents a number of underlying factors.