Question 21 2 pts The process of printing the logo on t-shirt for the new 2018 Champions Editon that is completed entirely by hand is divided into 5 sub processes Below is a picture of the process flow with times in seconds. The activities are sequential. Activity 1 (22:5.3) Activity 2 (17: 1.2) (25:43) Activity 3 Activity 4 (8:16) Activity 5 (11:13) (Mean: Standard Deviation) Your colleague begins to add together the five standard deviations to get the overall process standard deviation. You stop him because... Althose have to be multiplied to get the right answer. B...you want to break for lunch, no other reason C...standard deviations are not additive. First you have to take the natural logarithm and then add them together. D.standard deviations are not additive. First you have to square them to get the variance, add that up and then take the square root of the result to get the overall deviation