Which of the Following Is True About Probability Density Functions

question 17

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.

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