Which is not a discrete random variable?
A)The number of defects in a 4 × 8 sheet of plywood
B)The number of female passengers who board a plane
C)The time until failure of a vehicle headlamp
D)The number of correct answers on a statistics exam

Question

Quizplus · Accepted Answer

The time until failure of a vehicle headlamp is a continuous random variable, as it can take on any value within a certain range (e.g. seconds, minutes, hours). The other options are discrete random variables, since they only take on certain specific values (e.g. 0, 1, 2, ...) and cannot take on any value between them. Therefore, the best choice is C, as it is the only option that is not a discrete random variable.

Which Is Not a Discrete Random Variable