True/False: 1. A postal service that loses two boxes per billion deliveries on average is operating at a six-sigma level. (i$] 2. The BA270 definition of specification limits implies that a black belt quality engineer in a firm defines the specification limits for a product manufactured by the firm. [ [i\] 3. With reference to SPC: Control charts can be used to detect assignable/special cause variations. (i$f}] 4. Firms focused on providing a good quality service should strive for their service control limits to be within their service specification limits. [it] 5. If product or service capacity is more than expected demand, then, from a quality perspective, we say that the manufacturing or service process is capable. [x] 6. If a process is not capable initially, then a quality engineer is likely to achieve an acceptable Cp before achieving an acceptable Cpk for the said process. [id]