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.
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(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.