Question

suppose three test kits are tested at random. let D represent the defective test kit and let N represent the non defective test kit. if we let x be the random variable for the number of defective test kits, construct the probability distribution of the random variable X

Answer 1

The possible outcomes for X are 0, 1, 2, 3.

X=0:

NNN

X=1:

DNN

NDN

NND

X=2:

NDD

DND

DDN

X=3:

DDD