題組內容
(1) On the average, 6 cars arrive at the drive-up window of a bank every hour. Define the random variable X to be the number of cars arriving in any hour.(10%)
b. Find the mean and variance of Y.
(1) On the average, 6 cars arrive at the drive-up window of a bank every hour. Define the random variable X to be the number of cars arriving in any hour.(10%)
b. Find the mean and variance of Y.