Question

The  probability of the event that X is less than three is

(a) 0.45

(b) 0.50

(c) 0.55

(d) 0.60

This question was posed to me during an interview.

The above asked question is from Continous Time Signals in chapter EDC Overview of Electronic Devices & Circuits

Answer 1

Correct option is (b) 0.50

For explanation I would say: The required answer is given by Fx(3.0) = Fxy(3.0, infinity) =  0.1 + 0.35 + 0.05 = 0.50.