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Which of the Following Correctly Describes the Normal Probability Distribution

Question 106

Multiple Choice

Which of the following correctly describes the normal probability distribution?


A) It is single-peaked above the random variable's mean, median, and mode, all of which are equal to one another.
B) It is perfectly symmetric about this peaked central value and, thus, said to be bell-shaped.
C) It features tails extending indefinitely in both directions from the center, approaching (but never touching) the horizontal axis, which implies a positive probability for finding values of the random variable anywhere between minus infinity and plus infinity.
D) All of these.
E) None of these.

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