EK Chemical Company sells a specialty chemical in packages marked 22 grams. In reality, EK has set the process mean at 0,0 grams off the marked weight, and the process currently has a standard deviation of 1,0 grams. Suppose the customer will accept anywhere between +/- 1,6 from the marked weight as long as the average package has approximately 22 grams. Calculate the process capability index for EK Chemical