Find the Standard Deviation of the Data Summarized in the Given

question 7

Multiple Choice

Find the standard deviation of the data summarized in the given frequency distribution.
-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. $$\begin{array}{l}\text { Waiting time Number of }\\\begin{array} { c c } \text { (minutes) } & \text { customer } \\0 - 3 & 13 \\4 - 7 & 13 \\8 - 11 & 10 \\12 - 15 & 11 \\16 - 19 & 0 \\20 - 23 & 3\end{array}\end{array}$$

• A) 5.6 min
• B) 7.0 min
• C) 5.3 min
• D) 5.9 min

---

Definitions:

BMW Brand

A prestigious automobile brand known for its performance, luxury vehicles, and innovative automotive technology.

Short Films

Brief cinematic works, typically lower in length than feature films, used to convey a story or message in a condensed format.

Psychological Factors

Elements that impact consumer behavior and decision-making, including attitudes, perceptions, and motivations.

Purchase Decisions

The process by which consumers decide what, when, and how to buy a product or service.