In the normal distribution, the percentage of scores than fall within two standard deviations of the mean is approximately:
a. 34%
b. 50%
c. 68%
d. 95%
D
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If you were having problems with severe depression, the type of psychologist that would be the greatest help to you would be
a. a developmental psychologist. b. a social psychologist. c. a clinical psychologist. d. an experimental psychologist.
Which eye disease, if diagnosed early, can be treated with medication, lasers, and in some cases, a diet rich in antioxidant vitamins?
A. age-related macular degeneration (AMD) B. retinal detachment C. glaucoma D. retinoblastoma
Systematic desensitization is a technique based on
a. instrumental conditioning. b. classical conditioning. c. operant conditioning. d. aversive conditioning.
One sample has n = 4 scores and M = 10 . A second sample has n = 8 scores and M = 4 . If the two samples are combined, what is the mean for the combined sample?
a. 72/12 = 6 b. 14/5 = 2.8 c. 14/12 = 1.167 d. Cannot be determined with the information given