8. The bore size of a component to be used in an assembly is a critical dimension. Random samples...
Samples of n = 6 items are taken from a manufacturing process at regular intervals. A normally distributed quality characteristic is measured and ?̅ and S values are calculated for each sample. After 50 subgroups have been analyzed, we have : ∑ ?? ̅50 ?=1 = 1000 and ∑ ?? 50 ?=1 = 75 (a) Compute control limits for the ?̅ and S control charts. (b) Assume that all points on both charts plot within the control limits. What are...
Samples ofn-6 items each are taken from a manufacturing process at regular intervals. A normally distributed quality characteristic is measured, and X and S values are calculated for each sample. After 50 samples, we have 50 50 X, = 1000 S,-75 and a) Compute the control limits for the Xand S control charts. b) Assume that all points on both control charts plot within the control limits computed in part (a). What are the natural tolerance limits of the process?...
Samples of n = 6 items each are taken from a process at regular intervals. A quality characteristic is measured, and x-bar and R values are calculated for each sample. After 50 samples, we have Compute control limits for the x-bar and R control charts. All points on both control charts fall between the control limits computed in part (a). What are the natural tolerance limits of the process? If the specification limits are 41 ± 5.0, what are your...
Please answer to all parts of the problems. Do not answer if you do not get the right answer. Thank you! Control charts are to be kept on the thickness measurements for a process that rolls 10-gage copper sheets. The current specification in the sheets is 0.1360+0.0020 inch. After collecting 25 samples of n 5 measurements at approximately half-hour intervals, the data were used to determine Σ L:3.421 inches and R.-0.044 inches, with i1 to 25. Assume that the quality...