Find the Range and Standard Deviation for Each of the Two

question 117

Multiple Choice

Find the range 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. $\begin{array}{l|r|r|r|r|r|r|r|r}\text { Restaurant A } & 120 & 67 & 89 & 97 & 124 & 68 & 72 & 96 \\\hline \text { Restaurant B } & 115 & 126 & 49 & 56 & 98 & 76 & 78 & 95\end{array}$ Restaurant A: $57; 22.2$

• A)Restaurant B: \(77 ; 27.0\)
• Both measures indicate there is more variation in the data for restaurant B than the data for restaurant \(A\).
• B) Restaurant A: \(57; 22.2\)
• Restaurant B: \(56 ; 32.9\)
• It is inconclusive as to which data set has more variation.
• C) Restaurant A: \(75; 22.2\)
• Restaurant B: \(70; 27.0\)
• It is inconclusive as to which data set has more variation.
• D) Restaurant A: \(57; 25.0\)
• Restaurant B: \(70; 27.0\)
• Both measures indicate there is more variation in the data for restaurant B than the data for restaurant \(A\).

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