The Dark-Adaptation Curve Indicates That After About 5 to 7

question 45

Multiple Choice

The dark-adaptation curve indicates that after about 5 to 7 minutes in the dark

• A)the eyes are fully dark-adapted.
• B)most rods have completed photopigment regeneration.
• C)cones have reached their maximum sensitivity.

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Definitions:

Known Variance

A statistical term referring to the situation where the variance of a population is a known quantity.

TCritical One-Tail

A value on the t-distribution that is used in a one-tailed t-test to determine the statistical significance of a result.

P(T>=t) One-Tail

The probability that the test statistic T is greater than or equal to some value t, assuming the null hypothesis, used in one-tailed tests.

Treatment Group

A group of subjects or elements that receive the variable being tested in an experiment.