When psychologists study a sample to see if it represents a population (called Population 1 ) that is different from a known population (called Population 2 ), the comparison distribution is
A) the same as the distribution of Population 1.
B) the same as the distribution of Population 2.
C) a rectangular distribution with the same mean and standard deviation as Population 1.
D) a rectangular distribution with the same mean and standard deviation as Population 2.
B
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According to the text, conditions that indicate a depression include
a. a reduction in the use of defense mechanisms. b. difficulty in concentrating, in remembering details, and in making decisions. c. increased interest in hobbies and activities to the exclusion of one's studies. d. all of these.
The three key sequences of physical development are cephalocaudal development, proximodistal development, and ____.
A. transformation B. elongation C. specification D. differentiation