Determine the value of k?

Category: QuestionsDetermine the value of k?
Editor">Editor Staff asked 11 months ago

Determine the value of k?
 
(a) 1/8
 
(b) 1/4
 
(c) 1/6
 
(d) 1/2
 
I had been asked this question in an interview for internship.
 
I’m obligated to ask this question of Random Variables and its Probability Distributions in chapter Probability of Mathematics – Class 12
NCERT Solutions for Subject Clas 12 Math Select the correct answer from above options 
Interview Questions and Answers, Database Interview Questions and Answers for Freshers and Experience

1 Answers
Editor">Editor Staff answered 11 months ago

Correct option is (a) 1/8
 
Best explanation: We know that ∑P(xi)=1
 
P(X) = P(X=0) + P(X=1) + P(X=2) + P(X=3)
 
1 = 0 + 1/2 + 2k + 2k
 
1/2 = 4k
 
k = 1/8