be the time in minutes between two successive arrivals at the drive-up window of a local bank. If X has an exponential distribution with 1 = 2, compute the following: (If nec I your answer to three decimal places.) (a) The expected time between two successive arrivals is minutes. (b) The standard deviation of the time between successive arrivals is minutes (C) P(X = 1) X (d) P(1{ X= 3) te.).... PIX.A..8...... Enter a number