# Question: An chart on a normally distributed quality characteristic is

An chart on a normally distributed quality characteristic is to be established with the standard values µ= 100, σ = 8, and n = 4. Find the following:

(a) The two-sigma control limits.

(b) The 0.005 probability limits.

(a) The two-sigma control limits.

(b) The 0.005 probability limits.

**View Solution:**## Answer to relevant Questions

An chart with three-sigma limits has parameters as follows: UCL = 104 Center line = 100 LCL = 96 n = 5 Suppose the process quality characteristic being controlled is normally distributed with a true mean of 98 and a ...Specifications on a normally distributed dimension are 600 ± 20. x and R charts are maintained on this dimension and have been in control over a long period of time. The parameters of these control charts are as follows (n ...Control charts for have been maintained on a process and have exhibited statistical control. The sample size is n = 6. The control chart parameters are as follows: (a) Estimate the mean and standard deviation of the ...The data shown in Table 6E.2 are x and R values for 24 samples of size n = 5 taken from a process producing bearings. The measurements are made on the inside diameter of the bearing, with only the last three decimals ...The vane heights for 20 of the castings from Figure 6.25 are shown in table 6E.32. Construct the “between/within” control charts for these process data using a range chart to monitor the within-castings vane height. ...Post your question