Suppose that X and Y are uncorrelated. X has a mean of 15 and Y has a mean of 19 . Given a score of 14 on a particular X observation, the best prediction of Y is
a. 0
b. 15.
c. 19.
d. indeterminate.
c
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The median correlation in IQ scores for identical twins reared together is ____, while for fraternal twins reared together it is ____.
A. .60; 1.00 B. 1.00; .50 C. .85; .60 D. .50; .50
The nerve impulse is called an action potential
Indicate whether the statement is true or false
Simon broke his leg and is afraid that it will adversely impact his ability to teach his dance class. Which of the following is most likely true about this scenario?
A. Simon will have difficulty because dance is a procedure that is best learned through demonstration. B. Simon telling his students the steps to the dance will be just as effective as a demonstration. C. It will be easiest for the students to teach themselves a new dance and Simon can show them how to do it properly once his leg heals. D. Simon will have no difficulty telling his students how to perform a complicated dance move that he has performed hundreds of times.
The process of focusing on near or distant objects involves:
a. Changing the shape of the cornea b. Changing the shape of the lens c. Changing the shape of the retina d. Muscles behind the eyeball moving the eye forward or backward