Let random variable X follows an exponential distribution with probability density function fx (x) = 0.5 exp( -0.5x) , x > 0. Suppose that X1, . .., X95 is i.i.d random sample from distribution of X Approximate the probability of P(Xit ... + X95 > 175 ). O 0.78 O 0.85 O 0.40 O 0.90 ONon of them O 0.60 0.50