Find the Range, Variance, and Standard Deviation for Each of the Two

question 34

Multiple Choice

Find the range, variance, and standard deviation for each of the two samples, then compare the two sets of results.
-When investigating times required for drive-through service, the following results (in seconds) were obtained. $\begin{array}{lllllllll}\text { Restaurant A } & 120 & 67 & 89 & 97 & 124 & 68 & 72 & 96\end{array}$
$\begin{array}{lllllllll}\text { Restaurant B } & 115 & 126 & 49 & 56 & 98 & 76 & 78 & 95\end{array}$

• A) Restaurant A: \(75 \mathrm { sec } ; 493.98 \mathrm { sec } ^ { 2 } ; 22.23 \mathrm { sec }\)
• Restaurant B: \(70 \mathrm { sec } ; 727.98 \mathrm { sec } ^ { 2 } ; 26.98 \mathrm { sec }\)
• There is more variation in the times for restaurant \(B\).
• B) Restaurant A: \(57 \mathrm { sec } ; 793.98 \mathrm { sec } ^ { 2 } ; 28.18 \mathrm { sec }\)
• Restaurant B: \(77 \mathrm { sec } ; 727.98 \mathrm { sec } ^ { 2 } ; 26.98 \mathrm { sec }\)
• There is more variation in the times for restaurant A.
• C) Restaurant A: \(57 \mathrm { sec } ; 493.98 \mathrm { sec } ^ { 2 } ; 22.23 \mathrm { sec }\)
• Restaurant B: \(77 \mathrm { sec } ; 727.98 \mathrm { sec } ^ { 2 } ; 26.98 \mathrm { sec }\)
• There is more variation in the times for restaurant \(B\).
• D) Restaurant A: \(57 \mathrm { sec } ; 493.98 \mathrm { sec } ^ { 2 } ; 22.23 \mathrm { sec }\)
• Restaurant B: \(56 \mathrm { sec } ; 727.98 \mathrm { sec } ^ { 2 } ; 32.89 \mathrm { sec }\)
• There is more variation in the times for restaurant \(B\).

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Definitions:

DRO Reset Schedule

A DRO schedule that involves resetting the interval every time the inappropriate target behavior occurs.

Reinforcement

In behavioral psychology, a process by which a behavior is strengthened or increased through the addition of a stimulus following the behavior.

Differential Reinforcement

A behavioral technique that involves reinforcing specific behaviors while extinguishing others by withdrawal of reinforcement.

Free Time

Unstructured time periods where individuals can engage in activities of their choosing without obligations or constraints.