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Use the fact that the variance of a Poisson distribution is o The mean number...

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Use the fact that the variance of a Poisson distribution is o The mean number of bankruptcies filed per hour by businesses in a country was about seven a Find the variance and the standard deviation Interpret the results b Find the probability that at most three businesses will file bankruptcy in any given hour a The variance is Round to three decimal places as needed The standard deviation is Round to one decimal place as needed Choose the correct answer below OA The number of bankruptcies is always the standard deviation number of bankruptcies OB The number of bankruptcies always differs from the mean by no more than the standard deviation number of bankruptcies OC The number of bankruptcies usually differs from the mean by no more than the standard deviation number of bankruptcies OD The number of bankruptcies differs from the standard deviation by no more than the mean number of bankruptcies

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