# Question

Suppose that in the bookkeeping operation of a large corporation the probability of a recording error on any one billing is .005. Suppose the probability of a recording error from one billing to the next is constant, and 1, 000 billings are randomly sampled by an auditor.

a. What is the probability that fewer than four billings contain a recording error?

b. What is the probability that more than 10 billings contain a billing error?

c. What is the probability that all 1, 000 billings contain no recording errors?

a. What is the probability that fewer than four billings contain a recording error?

b. What is the probability that more than 10 billings contain a billing error?

c. What is the probability that all 1, 000 billings contain no recording errors?

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