Which of the following is TRUE of a sample in the statistical sense?
A. It can never be greater in number than the population from which it is drawn.
B. It is normally distributed.
C. It is normally distributed by a greeter at Sam's Club.
D. It will have a standard deviation that approximates that of the population.
Answer: A
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The U.S. Department of Health and Human Services advises exclusive breastfeeding for the first __________ and inclusion of breast milk in the baby’s diet until at least __________
A) 6 weeks; 6 months B) 4 months; 6 months C) 6 months; 1 year D) 1 year; 2 years
What is a central pattern generator?
a. A neural mechanism that guides movement on the basis of sensory feedback b. A neural mechanism that produces an alternation between two movements c. A neural network that produces a rhythmic pattern of motor action d. An innate movement that, once triggered, continues automatically until its completion
Which of the following observations suggests that classical conditioning often underlies placebo effects?
A) ?The effects are less likely to occur following a period of treatment with the real drug. B) ?The repeated administration of the placebo by itself strengthens its effectiveness. C) ?Both a and b are correct. D) ?Neither a nor b is correct.
Illusions are
a. distortions of existing stimuli. b. the same as hallucinations. c. the result of innate mechanisms. d. not based on external reality.