A Sociologist Studying Freshmen Carried Out a Survey, Asking (Among

question 5

Multiple Choice

A sociologist studying freshmen carried out a survey, asking (among other questions) how often students went out per week, how many hours they studied per day, and how many hours they slept at night. The table below provides the answers on the time slept and the time spent studying. Among the students who studied 4 or more hours, what proportion slept less than 6 hours a night?

• A)0.29
• B)0.08
• C)0.4
• D)0.2

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Definitions:

Opportunity Cost

The lost potential gain from other alternatives when one alternative is chosen.

Potential Benefit

The prospective advantage or gain that may be realized from a specific action or decision, often considered in planning and analysis.

Probability

A quantitative assessment of an event's probability, given as a number from 0 to 1.

Choosing

The act of selecting from a number of alternatives or possibilities.