8) You are interested in monitoring automotive plants relating to JD Power (a rating company) and numbers of nonconformities per item with equal weights. Suppose that you have 241 nonconformities out of 2,500 units from 25 trial periods and there are no out-of-control signals. What is the appropriate control charts UCL, CL, and LCL and process capability? 9) You apply crossed gauge R&R and derive PV = 102.3 mm and R&R = 7.2 mm. a) The gauge has measurement errors larger than what is likely needed. b) The gauge is not capable and a revised SOP is likely needed. c) The gauge is marginally capable with %R&R 28.2%. d) The gauge is capable with %R&R less than 10%. 10) According to the text, what types of measurement errors are found in measured values? a) Crossed Gauge R&R requires standard values. b) Systematic, repeatability, and reproducibility. c) Measurements are entirely noise. We can't really know any values. d) Standard errors relate to differences between appraisers. e) Unknown measurement errors are in all numbers, even standards. 11) Consider the following data. Make and interpret an n = 2 Xbar and R chart set. Assume that assignable causes are found an eliminated for any signals during the startup phase which is shorter than the usual 25 subgroups. What is the process capability? Morning Shift Afternoon Shift Notes I 12.2 14.2 10.8 11.2 12.7 14.1 15.2 13.1 19.8 15.1 Probably there was a measurement error 14.1 10.2 12.1 11.7 12.2 14.1 9.9 12.2