First time here? Checkout the FAQ!
x
+3 votes
170 views
asked in Statistics by (900 points)  
edited by

Find the expected value of X from the probability table.
 

 1
P(X)   0.3  0.8 0.4  
  

1 Answer

+1 vote
answered by (900 points)  
 
Best answer
The expected value of X, E(X) = ∑X*P(X).

E(X) = 1 * 0.3 + 2 * 0.8 + 3 × 0.4
       
           = 0.3 + 1.6 + 1.2 = 3.1

Answer: 3.1

Related questions

...