MATHEMATICS · Single correct · CBSE · Mathematics · Probability · Probability
Problem
For an experiment, the probabilities assigned to four outcomes are
k,2k,0.5−k,0.5−2k.
Which of the following intervals for k ensures that these numbers form a valid probability distribution?
(a) 0<k<0.25
(b) 0≤k≤0.25
(c) 0≤k≤0.5
(d) 0.25≤k≤0.5