On a Recent Saturday, a Total of 1062 People Visited

question 44

Multiple Choice

On a recent Saturday, a total of 1062 people visited a local library. Of these people, 233 were under age 10, 493 were aged 10–18, 168 were aged 19–30, and the rest were more than 30 years old. One person is sampled at random. What is the probability that the person is more than 30 years old?

• A)0.316
• B)0.684
• C)0.158
• D)0.726

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Definitions:

Socially Efficient

An economic condition where resources are allocated in a way that maximizes the net benefits to society as a whole.

Flu Vaccine

A vaccine designed to protect against the influenza virus, aiming to reduce the incidence of flu and its associated complications.

Underestimates

Errors or judgments that result in a lower estimation of quantity, value, or importance than is actually the case.

External Cost

A cost that is not borne by the parties involved in a transaction but rather by third parties or society at large, such as pollution.