The Chancellor of a Major University Was Concerned About Alcohol

question 59

Multiple Choice

The chancellor of a major university was concerned about alcohol abuse on her campus and wanted to find out the proportion of students at her university who visited campus bars on the weekend before the final exam week.Her assistant took a random sample of 250 students.The portion of students in the sample who visited campus bars on the weekend before the final exam week is an example of .

• A)a summary table.
• B)a categorical variable.
• C)a parameter.
• D)a statistic

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Definitions:

Optic Nerve

The nerve responsible for conducting visual data from the retina to the brain.

Visual Receptors

Cells located in the retina that are sensitive to light and play a key role in vision by converting light energy into neural signals.

Retina

A layer at the back of the eyeball containing cells that are sensitive to light and trigger nerve impulses that pass via the optic nerve to the brain, where a visual image is formed.

Trichromatic Theory

A theory of color vision proposing that the human eye has three types of receptors with different sensitivities to light wavelengths, responsible for the perception of color.