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Times for a surgercial procedure are normally distributed. There are two methods. Method A has a mean of 25 minutes and a standard deviation of

Times for a surgercial procedure are normally distributed. There are two methods. Method A has a mean of 25 minutes and a standard deviation of 8 minutes. Method b has a mean of 29 minutes and a standard deviation of 4.0 minutes.

Which procedure is preferred if the procedure must be completed within 27 minutes?

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