railway RRB JE (CBT I + CBT II) Mock Test 2024 Communication Systems Probability and Random Variable Random Variables
A random variable ‘z’ has a probability density function f(z) where f(z) = e-z 0 ≤ z < ∞ , the probability of 0 ≤ z ≤ 2 will be approximately
1
0.368
2
0.135
3
0.393
4
0.865