A discrete random variable takes the values and with probabilities and respectively
MATHEMATICS · Multi-part · AP · AP Statistics · Probability Random Variables Distributions · Probability Random Variables Distributions
Problem
A discrete random variable X takes the values 1,2,3 and 4 with probabilities 2k,3k,k and 6k respectively.
Answer the following questions.
(i) Find the value of k so that the above assignments form a probability distribution.
(ii) Verify that each individual probability obtained in part (i) lies in the permissible range.
(iii) Using the value of k, calculate P(X≥3).