A life insurance policy has determined that each week an, Ask an Expert

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A life insurance policy has determined that each week an average of seven claims is filed in its Nashville branch.

what is the probablity that durning the next week exactly seven claims will be filed?
what is the probablity that next week no claims will be filed?
what is the probablity that next week fewer than four claims will be filed?
what is the probablity that next two weeks exactly seveteen claims will be filed?

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