need help in Quality

1-A chipped cutting tool would create a-unusable data b-high process capability c-assignable variability d-a low standard deviation 2- Assume the tolerance on the dimension being measured is 20mm2mm. Find the process capability using the data shown a-0.6 b1.1 c-1.2 d1.4 3- Cp is a-used when a process is not under statistical control b-a long term process capability indicator c-a short term process capability indicator d-tells us what a process is capable of doing in future, assuming it remains in a state of statistical control. 4-A passenger riding in the front seat of a car can not accurately read the fuel gage due to which type of error? a-parallax error b-bias error) c-technique error d-operator error