A Group of Statistics Students Decided to Conduct a Survey

question 10

Multiple Choice

A group of statistics students decided to conduct a survey at their university to find the average (mean) amount of time students spent studying per week. Assuming a population standard deviation of three hours,what is the required sample size if the error should be less than a half hour with a 99% level of confidence?

• A)196
• B)239
• C)15
• D)16

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Definitions:

Feature Detectors

Neurons in the brain that identify specific features of a stimulus, such as shape, angle, or movement.

Bipolar Cells

Neurons in the retina that transmit signals from the photoreceptors to the ganglion cells.

Blindsight

A phenomenon in which people who are perceptually blind in certain areas of their visual field demonstrate some response to visual stimuli without consciously perceiving them.

Gestalt

An organized whole. Gestalt psychologists emphasized our tendency to integrate pieces of information into meaningful wholes.