Question: Which of the following is correct? A continuous random variable has a probability density function, and a discrete random variable has a probability mass function.

Which of the following is correct?

A continuous random variable has a probability density function, and a discrete random variable has a probability mass function.

A discrete random variable has a probability mass function but not a cumulative distribution function.

A continuous random variable has a probability density function but not a cumulative distribution function.

A continuous random variable has a probability mass function, and a discrete random variable has a probability density function.

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