Times for a surgical procedure are normally distributed. There are two methods. Method A has a mean of 31 minutes and a standard deviation of 4 minutes, while method B has a mean of 35 minutes and a...

Times for a surgical procedure are normally distributed. There are two methods. Method
A
has a mean of 31 minutes and a standard deviation of 4 minutes, while method
B
has a mean of 35 minutes and a standard deviation of 2.0 minutes.

(c)
Which procedure is preferred if the procedure must be completed within 39 minutes?

multiple choice 3

• 
  
  
  

  
  

  Method A

  
  

  
  
  
  


• 
  
  
  

  
  

  Method B

  
  

  
  
  
  


• 
  
  
  

  
  

  Either Method