Let X = the time between two successive arrivals at the drive-up window of a local bank. If X has an exponential distribution with λ = 1, (which is identical to a standard gamma distribution with α = 1), compute the following. (If necessary, round your answer to three decimal places.)

(a) The expected time between two successive arrivals
(b) The standard deviation of the time between successive arrivals

(c) P(X ? 1)
(d) P(2 ? X ? 5)

answer: 2x + 2 − 2 = 10 − 2; subtraction property of equality

step-by-step explanation:

solve systems of equations by graphing. a system of linear equations contains two or more equations e.g. y=0.5x+2 and y=x-2. the solution of such a system is the ordered pair that is a solution to both equations. to solve a system of linear equations graphically we graph both equations in the same coordinate system

middle maybe?

step-by-step explanation: