question 4-6 are all conected but i only need help on number 6

4. The specifications for one dimension of part of a ski binding are 1.50 plus or minus 0.002 centimeter. When the manufacturing facility makes parts of this general size, the process has a standard deviation of measurements of 0.0015 centimeter. a. Calculate the process capability index for this part. b. Is the process capable of meeting these specifications? c. If the process is used and is kept centered at 1.50 centimeters, what percentage of the ski binding parts will be outside the specifications for this dimension? 5. Suppose that the company in problem 4 wishes to produce 10,000 parts that are within the specs (specifications) and that it operates the process centered at 1.500 centimeters. All parts that are outside the specs are scrapped, and the company will receive only $1.00 for each of them. It costs the company $36 to produce each part. a. How many parts should the company start so that it can expect 10,000 good parts to be completed? b. What would be the cost of internal failure in this situation? 6. Suppose that in problem 5 all parts that are too large can be reworked to be within the specs at a cost of $9.00. All parts that are too small will still be scrap, as stated in problem 5. a. Under these conditions, how many parts should be started to complete 10,000 good parts? b. What will be the cost of scrap and rework