An urn contains 3 red, 2 blue, and 5 green marbles. If we pick 4 marbles with replacement and count the number of red marbles in the 4 picks, the random variable is:
A)the number of red marbles.
B)the number of red, blue, or green marbles.
C)the number of green marbles.
D)None of the answer options is correct.

Question

Quizplus · Accepted Answer

The random variable is specifically counting the number of red marbles in the four picks, making it a discrete random variable with values 0, 1, 2, 3, or 4.

An Urn Contains 3 Red, 2 Blue, and 5 Green