Advertisement Remove all ads

If X is a random variable with probability mass function - Mathematics and Statistics

Advertisement Remove all ads
Advertisement Remove all ads
Advertisement Remove all ads

If X is a random variable with probability mass function

P(x) = kx ,  x=1,2,3

      = 0 ,     otherwise

then , k=..............

(a) 1/5

(b) 1/4

(c) 1/6

(d) 2/3

 

Advertisement Remove all ads

Solution

(c)

x 1 2 3
P(x) k 2k 3k

Since, the function is a p.m.f.

∴ ∑P(xi) = 1
∴ k + 2k + 3k = 1
∴ k = 1/6

Concept: Probability Distribution - Probability Mass Function (P.M.F.)
  Is there an error in this question or solution?

APPEARS IN

Video TutorialsVIEW ALL [1]

Advertisement Remove all ads
Share
Notifications

View all notifications


      Forgot password?
View in app×