It is estimated that 52 percent of the callers to the


It is estimated that .52 percent of the callers to the Customer Service department of Dell Inc. will receive a busy signal.

What is the probability that of today's 1,300 callers at least 5 received a busy signal? Use the poisson approximation to the binomial. (Round your answer to 4 decimal places.)

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Basic Statistics: It is estimated that 52 percent of the callers to the
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