# Question

Specifications on a cigar lighter detent are 0.3220 and 0.3200 in. Samples of size 5 are taken every 45 minutes with the results shown in Table 6E.18 (measured as deviations from 0.3210 in 0.0001 in.).

(a) Set up an R chart and examine the process for statistical control.

(b) What parameters would you recommend for an R chart for on-line control?

Excluding Sample Number 12:

(c) Estimate the standard deviation of the process.

(d) What is the process capability?

(a) Set up an R chart and examine the process for statistical control.

(b) What parameters would you recommend for an R chart for on-line control?

Excluding Sample Number 12:

(c) Estimate the standard deviation of the process.

(d) What is the process capability?

## Answer to relevant Questions

Reconsider the data from Exercise 6.42 and establish x and R charts with appropriate trial control limits. Revise these trial limits as necessary to produce a set of control charts for monitoring future production. Suppose ...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 ...An chart is to be established based on the standard values µ = 600 and σ = 12, with n= 9. The control limits are to be based on an a-risk of 0.01. What are the appropriate control limits? (a) Thirty observations on the oxide thickness of individual silicon wafers are shown in table 6E.23. Use these data to set up a control chart on oxide thickness and a moving range chart. Does the process exhibit statistical ...Reconsider the situation in Exercise 6.61. Construct an individuals control chart using the median of the span-two moving ranges to estimate variability. Compare this control chart to the one constructed in Exercise 6.61 and ...Post your question

0