Design specifications require that a key dimension on a product measure 100 + 10 units. A process being considered for producing this product has a standard deviation of four units. Questions 4.1 If the process mean is centered (i.e., equal to the spec mean), who can you say quantitatively) regarding the process copability Calculate the Cak and interpret it. 4.2 Suppose the process average shifts to 92. Colculate the new process capability (Sak). 4.3 What can you say about the process after the shift? (Interpret the new Siekin item 4.2) 4.4 If the process mean is centered, to achieve four sigma quality (i.e.. Sok = 1.33), what should be the process standard deviation? (hint: the process standard deviation is part of the denominator in the Spk formula)