Times for surgical procedure are normally distributed.  There are two methods. Methods A has a mean of 32 minutes and a standard deviation of 4 minutes., while method B has a mean of 36 minutes and a standard deviation of 2.0 minutes which procedure Is preferred if the procedure must be completed within 34 minutes

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Times for surgical procedure are normally distributed.  There are two methods. Methods A has a mean of 32 minutes and a standard deviation of 4 minutes., while method B has a mean of 36 minutes and a standard deviation of 2.0 minutes which procedure Is preferred if the procedure must be completed within 34 minutes 

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which method if preferred for 31 minutes 38 minutes and 39.0 minutes

 

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