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Times for a surgical procedure are normally distributed. There are two methods. Method A has a mean of 23 minutes and a standard deviation of 5 minutes, while method .5 has a mean of 27 minutes and a standard deviation of 2.5 minutes. {3} Which procedure is preferred If the procedure must be completed within 24 minutes? '3 Method A '3 Method B I'3I Either Method {b} Which procedure is preferred if the procedure must be completed within 34.5 minutes?I I'3I Method A I'3I Method B I'3I Either Method {c1 Which procedure is preferred lfthe procedure must be oompleted within 31 minutes? I'3I Method A I'3I Method B '3 Either Method