# Question: A normally distributed quality characteristic has specification limits at LSL

A normally distributed quality characteristic has specification limits at LSL = 10 and USL = 20. A random sample of size 50 results in x =16 and s =1.2 .

(a) Calculate a point estimate of Cpk.

(b) Find a 95% confidence interval on Cpk.

(a) Calculate a point estimate of Cpk.

(b) Find a 95% confidence interval on Cpk.

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

A normally distributed quality characteristic has specification limits at LSL = 50 and USL = 60. A random sample of size 35 results in x 55.5 and s 0.9. (a) Calculate a point estimate of Cpk. (b) Find a 95% ...Ten parts are measured three times by the same operator in a gauge capability study. The data are shown in Table 8E.9 (a) Describe the measurement error that results from the use of this gauge. (b) Estimate the total ...A product is packaged by filling a container completely full. This container is shaped as shown in the figure. The process that produces these containers is examined, and the following information collected on the three ...A sample of ten items from a normal population had a mean of 300 and standard deviation of 10. Using these data, estimate a value for the random variable such that the probability is 0.95 that 90% of the measurements on this ...A process is in statistical control with x = 199 and R = 3.5. The control chart uses a sample size of n= 4. Specifications are at 200 ± 8. The quality characteristic is normally distributed. USL = 200 + 8 = 208; LSL = 200 ...Post your question