Practicing Success

Target Exam

CUET

Subject

-- Mathematics - Section B2

Chapter

Probability Distributions

Question:

The probability distribution of a discrete random variable is given as:

X

2

3

4

5

 P(X) 

 2k 

 5k 

 k 

 3k 

The value of E(X) is:

Options:

$\frac{15}{11}$

$\frac{38}{11}$

$\frac{38}{13}$

$\frac{15}{13}$

Correct Answer:

$\frac{38}{11}$

Explanation:

The correct answer is Option (2) → $\frac{38}{11}$