Mae Pranam Sauce is a leading Thai sauce producer. One of its most popular products, the Sweet Chili sauce, was packaged in the 800 grams bottle. Their historical process mean has been 801 grams and their tolerance limits are set at 800 grams plus or minus 10 grams. 

a.) What does their process standard deviation need to be in order to have a process capability index of 1.5?  (** No need to show calculation**) 

 b.) What does their process standard deviation need to be in order to reach Six Sigma quality levels? (** No need to show calculation**)