6. BlueBolt Bottiers has a bottle-filling process with a mean value of 64 ounces and a standard deviation of 8 ounces. a. (**) Suppose that the upper and lower tolerance limits are 71 and 57 ounces, respectively. What is the process capability ratio? What would the standard deviation have to be in order for the process to meet the tolerance limits 99.7% of the time? b. (***) Now suppose BlueBolt Bottlers makes some pro- cess improvements, thereby lowering the standard deviation of the process to 1.5 ounces, rather than 8 ounces. Using the data in problem 10 and the new standard deviation, calculate the process capability ratio. Is the filling process able to meet the tolerance limits 99.7% of the time? Does the process provide Six Sigma quality levels? Explain