About 95 percent of scores fall between ________ standard deviation(s) above and below the mean in a normal distribution
a. four
b. one
c. three
d. two
Answer: d
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Which of the following statements regarding Ivan Pavlov is accurate?
A. Pavlov was studying salivation in dogs as part of a research program on digestion. B. Pavlov was elated when his student first noticed that the dogs were salivating before tasting the food. C. Pavlov received no recognition for his research before his death. D. Pavlov stressed the importance of speculating about the dog's feelings toward the food.
Early studies of brain tissue that used staining techniques and microscopes from the 19th century described the "nerve net." These early understandings were in error in the sense that the nerve net was believed to be
a. continuous. b. composed of discrete individual units. c. composed of cell bodies, axons, and dendrites. d. composed of neurotransmitters rather than neurons.
When experimental results are significant, this means the hypothesis has been
a. experimental; rejected b. alternative; rejected c. null; accepted d. null; rejected
Which of the following is considered a multifactorial problem?
A. Cystic fibrosis B. Down's syndrome C. Diabetes mellitus D. XYY syndrome