A Survey Asked 805 People How Many Times Per Week

question 37

Multiple Choice

A survey asked 805 people how many times per week they dine out at a restaurant. The results are presented in the following table.

$\begin{array} { c c } \hline \text { Number of Times } & \text { Frequency } \\\hline 0 & 100 \\1 & 267 \\2 & 220 \\3 & 111 \\4 & 51 \\5 & 25 \\6 & 24 \\7 & 7 \\\hline \text { Total } & 805\end{array}$

Consider the 805 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. Compute the standard deviation

• A) 2.1
• B) 1.5
• C) 2.2
• D) 1.9

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Definitions:

Puckering

The act of contracting or gathering into wrinkles or folds, often referring to the lips.

Saliva

A clear liquid secreted by the salivary glands in the mouth, important for digestion and maintaining oral health.

Behaviorists

Psychologists who focus on observable behaviors and the ways in which they're learned, often through conditioning, without reference to mental processes.

Conditioning

A basic kind of learning that involves associations among environmental stimuli and an organism’s behavior.