If the Random Variable X Is Exponentially Distributed with Parameter $\lambda$

Multiple Choice

If the random variable X is exponentially distributed with parameter $\lambda$ = 4, then the probability P(X $\leq$ 0.25) , up to 4 decimal places, is:

A) 0.6321.
B) 0.3679.
C) 0.2500.
D) None of these choices are correct.