Find the expected value of the random variable with the following probability distribution

x ( 0, 1, 2, 3, 4, 5, 6, 7, 8 )
P ( .0.3, .15, .27, .20, .13, .10, .07, .03, .02)

answer:   35 % is the probability of a late departure or an early arrival.

step-by-step explanation:

let l represents the late departure and e represents the early departure.

then, according to the question,

p(l) = 12 %,   p(e) = 27 % and = 4 %

and, we have to find out,

but, we know that,

which is the required equation that will use to find the probability of a late departure or an early departure.

therefore,   the probability of a late departure or an early arrival =   35 %

a is the best answer choice

x=20

step-by-step explanation: