Find the range, variance, and standard deviation for each of the two samples, then compare the two sets of results.
-The manager of a bank recorded the amount of time each customer spent waiting in line during peak business hours one Monday. The frequency distribution below summarizes the results. Find the standard deviation. Round your answer to one decimal place. $$\begin{array}{l}
\text { Waiting tim\& Number of }\
\begin{array} { c | c }
\text { (minutes } & \text { customer } \
\hline 0 - 3 & 12 \
4 - 7 & 14 \
8 - 11 & 10 \
12 - 15 & 13 \
16 - 19 & 0 \
20 - 23 & 1
\end{array}
\end{array}$$
A)4.9
B)5.2
C)7.0
D)4.7

Question

Find the range, variance, and standard deviation for each of the two samples, then compare the two sets of results.
-The manager of a bank recorded the amount of time each customer spent waiting in line during peak business hours one Monday. The frequency distribution below summarizes the results. Find the standard deviation. Round your answer to one decimal place. $$\begin{array}{l}
\text { Waiting tim\& Number of }\
\begin{array} { c | c } 
\text { (minutes } & \text { customer } \
\hline 0 - 3 & 12 \
4 - 7 & 14 \
8 - 11 & 10 \
12 - 15 & 13 \
16 - 19 & 0 \
20 - 23 & 1
\end{array}
\end{array}$$
A)4.9
B)5.2
C)7.0
D)4.7

Quizplus · Accepted Answer

The standard deviation is calculated using the midpoints of each class interval, the frequencies, and the formula for standard deviation. After performing these calculations, the standard deviation is approximately 4.9.

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