How Many Observations Should Be Made If She Wants to Be

question 81

Multiple Choice

How many observations should be made if she wants to be 95.44 percent confident that the maximum error in the observed time is two seconds? The standard deviation of task times is 6 seconds.

• A) 5
• B) 6
• C) 30
• D) 36
• E) 49

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Definitions:

Reverse Causality

A situation where it is unclear whether A causes B or B causes A, challenging assumptions about cause and effect relationships.

Construct Validity

The extent to which a test or tool accurately measures what it is intended to measure, and the degree to which it can be said to truly assess the theoretical construct it purports to measure.

Social Psychologists

Scientists or researchers who study how an individual's thoughts, feelings, and behaviors are influenced by the actual, imagined, or implied presence of others.

External Validity

The extent to which the results of a study can be generalized to and across other situations, people, settings, and time periods.