The Manager of a Bank Recorded the Amount of Time

question 105

Multiple Choice

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. $$\begin{array} { | l | l | } \hline \begin{array} { l } \text { Waiting Time } \\\text { (minutes) }\end{array} & \begin{array} { l } \text { Number of } \\\text { Customers }\end{array} \\\hline 0 - 3 & 9 \\\hline 4 - 7 & 10 \\\hline 8 - 11 & 12 \\\hline 12 - 15 & 4 \\\hline 16 - 19 & 4 \\\hline 20 - 23 & 2 \\\hline 24 - 27 & 2 \\\hline\end{array}$$ 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) 0.093
• C) 0.651
• D) 0.558

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Definitions:

Contributory Negligence

A legal doctrine that reduces the amount of damages a plaintiff can recover in a negligence-based claim, based upon the degree to which the plaintiff's own negligence contributed to the injury.

Assumed Risk

A principle that a person may voluntarily undertake or accept a risk inherent to an activity, thus absolving others from liability for any injury resulting from that risk.

Last Clear Chance

is a doctrine in tort law that allows a plaintiff to recover damages despite proof of contributory negligence if the defendant had the last opportunity to avoid the accident.

Intervening Cause

A legal term for an event that occurs after a party's initial act of negligence and contributes to a harmful event without breaking the causal link between the negligent act and the harm.