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

question 22

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. What proportion of students slept less than 6 hours per night?

• A)0.286
• B)0.292
• C)0.25
• D)0.333

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Definitions:

Volcanic Ash

Fine particles of rock and volcanic glass created during explosive volcanic eruptions, capable of being carried long distances by wind.

Slope Failure

The movement and failure of slope materials like soil and rock, often leading to landslides, avalanches, or other forms of mass wasting.

Rock Avalanche

High-velocity, turbulent flow of rock, sediment, and soil that results from the collapse of a steep mountain front.

Debris Slide

The downslope movement of soil, weathered sediment, or other unconsolidated material, partly as a sliding, coherent mass and partly by internal shearing and flow.