Determine Whether the Events Are Mutually Exclusive If We Randomly Select One of the Customers Represented in a Bank

question 117

Multiple Choice

Determine whether the events are mutually exclusive.
-The manager of a bank recorded the amount of time each customer spent waiting in line during peak business hours one Monday. The frequency table below summarizes the results. $$\begin{array}{l}\begin{array} { r | r } \text { Waiting Time}&\text{Number of }\\\text { (minutes) }&\text{ Customers } \\\hline 0 - 3 & 13 \\4 - 7 & 10 \\8 - 11 & 11 \\12 - 15 & 5 \\16 - 19 & 4 \\20 - 23 & 2 \\24 - 27 & 3\end{array}\end{array}$$ If we randomly select one of the customers represented in the table, what is the probability that the waiting time is at least 12 minutes or between 8 and 15 minutes?

• A)0.727
• B)0.104
• C)0.521
• D)0.625

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Definitions:

Similarities

The state or condition of being alike, sharing characteristics or qualities with something or someone else.

Transgender

An umbrella term for persons whose gender identity or expression differs from the sex they were assigned at birth.

Cisgender

A term for individuals whose gender identity matches the sex they were assigned at birth.