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QUESTION
t is estimated that 0.5% of the callers to the billing department of a local telephone company will receive a busy signal.
t is estimated that 0.5% of the callers to the billing department of a local telephone company will receive a busy signal.
What is the probability that of today's 1100 callers at least 5 received a busy signal? Use the poisson approximation to the binomial. (Round the final answer to 4 decimal places.)
Probability Not attempted
