In a psychology class of 100 students, test scores are normally distributed with a mean of 80 and a standard deviation of 5 . Approximately what percentage of students have scores between 70 and 90?
a. 68%
b. 80%
c. 95%
d. 99%
c
Psychology
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List three of the characteristics of the concrete operational stage and give an example of each.
What will be an ideal response?
Psychology
Implicit memory involves:
a. remembering information without conscious awareness or willful intent b. remembering information with conscious awareness or willful intent c. recognition rather than free recall d. recall rather than free recognition
Psychology
Most cohabiting couples will either get married or break up by the time they have lived together for:
a. one year c. three years b. two years d. four years
Psychology
In the 1980s, political scientist James Flynn observed that the IQs of Americans were rising at a rate of about _____ point(s) per decade
A) 1 B) 2 C) 3 D) 4
Psychology