Which of these variables could be described with a discrete probability model? S

Question

Which of these variables could be described with a discrete probability model? Select the best answer.

A. A chemistry experiment is repeated many times and the time required for a reaction to occur in seconds is recorded. B. A professor is randomly selected and their commuting distance in kilometers to campus is recorded. C. A student is randomly selected from a class and the number of correct answers on a five-question multiple choice test is recorded. D. A Canada Post parcel is randomly selected and the weight in pounds of the parcel is recorded.

Explanation / Answer

Correct option:

C. A student is selected from a class and the number of answers on a five question multiple choice test is reconded,

EXPLANATION:

Here, the variable x is the number of correct answers. So, x can take only nteger values. So, this variable could be described with a discrete probability model.

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