When σ Is Unknown, One Should Use an Estimate That

question 133

True/False

When σ is unknown, one should use an estimate that is considered to be at least as large as the true σ. This will provide a conservative sample size to be on the safe side.

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Definitions:

Sensory Adaptation

The process by which sensory receptors become less sensitive to constant stimuli over time, allowing organisms to focus on changes in their environment.

Just Noticeable Difference

The minimal change in a stimulus that can just barely be detected by an organism.

Absolute Threshold

The minimum intensity of a stimulus that can be detected by an organism's sensory systems at least 50% of the time.

Wavelength

The distance between successive crests of a wave, especially points in a sound wave or electromagnetic wave.