i need help finding the a). process capability ratio b). what would lead need to reduce the standard deviation to to meet the tolerance limits c). the bee process capability ratio

Leah's Toys makes rubber balls. The current process is capable of producing balls that weigh, on average, 2.8 ounces, with a standard deviation of 0.27 ounces. a. The upper and lower tolerance limits are 3.5 ounces and 2.1 ounces respectively. The process capability ratio is (Enter your response rounded to three decimal places) Enter your avower in the answer box and then click Check Answer 3 Parts remaining Clear All Check