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Zoe is a participant in a psychophysical study and is having her absolute threshold for brightness measured.Describe the procedure for determining this measurement.
Levator Anguli Oris
A facial muscle that elevates the angle of the mouth, contributing to expressions such as smiling.
Normal Populations
Populations in which the distribution of data points follows a normal (bell-shaped) distribution curve.
Two-Tailed Hypothesis Test
A statistical analysis method where the significance of the observed data can be in either tail of the distribution, testing for either too high or too low outcomes relative to the hypothesized values.
Critical Value
A threshold in a statistical test that a test statistic must exceed to reject the null hypothesis.
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