Multiple Choice
Which of the following is true about probability density functions?
A) A graph of the density function must lie at or below the x-axis.
B) The total area under the density function below the x-axis is 2.0.
C) It calculates the probability of a random variable lying between a certain interval.
D) P (a) x P (b) is the area under the density function between two numbers a and b.
Correct Answer:

Verified
Correct Answer:
Verified
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