Updated: Question in GATE 2012 Production and Industrial Engineering Paper with Solution

A question in GATE 2012 Production and Industrial Engineering Paper with Solution has been updated:

T he specification limits for the weight of a product are 13.1 kg and 15 kg. If the process has a variance of weight 0.05 , then the process capability index is

1. 1.4
2. 6.3
3. 1.9
4. 8.6