engineering recuitment HAL Management & Design Trainee Mock Test 2023 Engineering Mathematics Probability and Statistics Random Variables Basics
Given that x is a random variable in the range [0, ∞] with a probability density function \(\frac{e^-{\frac{x}{2}}} {K}\) the value of the constant K is___________.
1
2
2
-7
3
-2
4
4