The relative humidity in a greenhouse is expected to be between
64.5 and 84.7 %. Random samples were taken over a span of one week
yield the following values: 60.5,78.2,70.5,84.7,81.3, 80.0,
85.2, 60.5, 88.7, 75.6 (in %).
a/ Find and interpret the process capability index.
b/ Explain what do CPU and CPL stand for? How do CPU and CPL
affect the process mean?
c/ Assuming that the process standard deviation cannot be
reduced. if we increase the CPL to 1,...