The billing department of a major credit card company attempts to control errors (clerical, data transmission, etc.)

Question:

The billing department of a major credit card company attempts to control errors (clerical, data transmission, etc.) on customers’ bills. Suppose that errors occur according to a Poisson with parameter λ = 0.01. What is the probability that a customer’s bill selected at random will contain one error? Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...