Conditional Survival Exponential

Problem

The exponential distribution is memoryless: P(X > s + t | X > s) = exp(-rate * t).

Given the rate, s, and t, return the conditional survival probability.

Hint

The elapsed time s cancels out.

case 1

in: [1,2,3]

expected: 0.049787068367863944

case 2

in: [0.5,0,1]

expected: 0.6065306597126334

case 3

in: [2,5,0]

expected: 1

Starter codePython

def conditional_survival_exponential(rate, s, t):
    # Your code here
    pass

3 test cases · run your code against them in the editor