A process filling small bottles with baby formula has a target of 2.9 ounces \pm 0.260 ounce. Two hundred bottles from the process were sampled. The results showed the average amount of formula placed in the bottles to be 2.850 ounces. The standard deviation of the amounts was 0.069 ounce. Determine the value of Cpk. Roughly what proportion of bottles meet the specifications? The process capability index is (round your response to three decimal places)