Karen's first psychology exam score is –1 standard deviation from the mean in a normal distribution. The test has a mean of 75 and a standard deviation of 5 . Karen's percentile rank would be approximately:
a. 16%.
b. 54%.
c. 70%.
d. none of the above.
a
You might also like to view...
One sign of abnormality is when a person engages in behavior that creates a great deal of emotional discomfort or __________.
A. personal distress B. social deviance C. statistical rarity D. situational context
Neal Miller administered shocks to the pleasure centers of a rat's hypothalamus when the animal's heart rate changed. What is this an example of?
a. biofeedback training c. classical reinforcement b. pleasure training d. negative reinforcement
A deer waits motionlessly, hidden in the thicket as a band of hunters approaches. As the hunters get closer, their dogs bark, picking up the scent of their prey. In a futile effort to escape, the deer bolts. Which of the following most accurately describes the nervous system of the hunted deer at this point?
A. Its sympathetic nerve fibers are more active than its parasympathetic nerve fibers. B. Its parasympathetic nerve fibers are more active than its sympathetic nerve fibers. C. Both its sympathetic and parasympathetic nerve fibers are equally active. D. Neither its sympathetic nor its parasympathetic nerve fibers are aroused.
Charlie practices the piano every day after school because he loves music and finds playing the piano enjoyable. In this example, Charlie's behavior is:
a. extrinsically motivated b. intrinsically motivated c. self-serving d. unmotivated