When You Stare at a Grating of Wide Bars for 55

question 32

Multiple Choice

When you stare at a grating of wide bars for 55 seconds, then look at a grating with narrow bars, the narrow bars will

• A) seem to be thinner than they actually are.
• B) seem to be wider that they actually are.
• C) seem to change orientation.
• D) be unaffected by the adaptation period.

---

Definitions:

Population Standard Deviation

A measure of the dispersion or spread of all values in a population dataset.

Chi-Square Statistic

A statistical measure used in tests of independence to analyze the frequency distribution of observed data versus an expected data set.

Null Hypothesis

A hypothesis that there is no significant difference between specified populations, any observed difference being due to sampling or experimental error.

Sample Data

A subset of data collected from a larger population, used to analyze and make inferences about that population.