Leah's Toys also makes rubber balls. The current process is capable of producing balls that weigh, on

Question:

Leah's Toys also makes rubber balls. The current process is capable of producing balls that weigh, on average, 3 ounces, with a standard deviation of 0.25 ounces. What is the process capability ratio, assuming upper and lower tolerance limits of 3.5 and 2.5 ounces? Is Leah's able to meet the tolerance limits 99.7% of the time? Explain.