Christabel Ireri

suppose that a quality characteristic has a normal distribution with specification limits at USL=100 and LSL=90. A random sample of 30 parts results in x-bar=97 and s=1.6

suppose that a quality characteristic has a normal distribution with specification limits at USL=100 and LSL=90. A random sample of 30 parts results in x-bar=97 and s=1.6 A. Calculate a point estimate of Cpk, the ^ ^ Cpu and Cpl B. Find a 95% confidence interval on Cpk. EXPERT ANSWER

9- A process is in statistical control with x= 39.7 and R=2.5. The control chart uses a sample size of n= 2. Specifications are at 40 5. The quality characteristic is normally distributed. n=2; À=ž= 39.7; R=2.5; =R/d, = 2.5/1.128=2.216 USL = 40 + 5 = 45; LSL = 40 – 5 = 35 (a) Estimate the potential capability of the process. (b) Estimate the actual process capability. (c) Calculate and compare the PCRs Cpm and Cpkm.

EXPERT ANSWER

A process is under control with 𝑋̿ = 39.7, 𝑅̅ = 2.5. The graph of control uses a sample size of n = 2. Specifications are 40 ± 5. The quality characteristic is normally distributed. (a) Estimate potential capacity 𝐶𝑝. b) Estimate the effective capacity 𝐶𝑝𝑘. (c) How much could process performance improve if the average could be nominal value?

A process is under control with 𝑋̿ = 39.7, 𝑅̅ = 2.5. The graph of control uses a sample size of n = 2. Specifications are 40 ± 5. The quality characteristic is normally distributed. (a) Estimate potential capacity 𝐶𝑝. b) Estimate the effective capacity 𝐶𝑝𝑘. (c) How much could process performance improve if the …

A process is under control with 𝑋̿ = 39.7, 𝑅̅ = 2.5. The graph of control uses a sample size of n = 2. Specifications are 40 ± 5. The quality characteristic is normally distributed. (a) Estimate potential capacity 𝐶𝑝. b) Estimate the effective capacity 𝐶𝑝𝑘. (c) How much could process performance improve if the average could be nominal value? Read More »

A process is in statistical control with x(double bar) = 39.7 and R(bar) = 2.5. The control chart uses a sample size of n = 2. Specifications are at 40 +/- 5. The quality characteristic is normally distributed. Estimate the potential capability of the process and explain your conclusion.

A process is in statistical control with x(double bar) = 39.7 and R(bar) = 2.5. The control chart uses a sample size of n = 2. Specifications are at 40 +/- 5. The quality characteristic is normally distributed. Estimate the potential capability of the process and explain your conclusion. EXPERT ANSWER

A process is in statistical control X (=) = 75 and S’ = 2. The control bar uses a sample size of n = 5. Specifications are at 80 ± 8. The quality characteristics are normally distributed

A process is in statistical control X (=) = 75 and S’ = 2. The control bar uses a sample size of n = 5. Specifications are at 80 ± 8. The quality characteristics are normally distributed a) Estimate the Cp and Cpk. Appreciate answer with workings EXPERT ANSWER

A process is in statistical control with xbarbar = 199 and rbar=3.5. The control chart uses a sample size of

A process is in statistical control with xbarbar = 199 and rbar=3.5. The control chart uses a sample size ofn = 4. Specifications are at 200 +/- 8. The quality characteristic is normally distributed. a. Estimate the potential capability of the process.b. Estimate the actual process capability.c. How much improvement could be made in process …

A process is in statistical control with xbarbar = 199 and rbar=3.5. The control chart uses a sample size of Read More »

A process is in control with x-bar bar = 75 and standard deviation of 2. The process specifications are at 80 +/- 8. The sample size n=5. (a). estimate the potential capability (b). estimate the actual capability ( c). How much could the process fallout be reduced by shifting the mean to the normal dimension? Assuming that the quality characteristic is normally distributed.

A process is in control with x-bar bar = 75 and standard deviation of 2. The process specifications are at 80 +/- 8. The sample size n=5. (a). estimate the potential capability (b). estimate the actual capability ( c). How much could the process fallout be reduced by shifting the mean to the normal dimension? …

A process is in control with x-bar bar = 75 and standard deviation of 2. The process specifications are at 80 +/- 8. The sample size n=5. (a). estimate the potential capability (b). estimate the actual capability ( c). How much could the process fallout be reduced by shifting the mean to the normal dimension? Assuming that the quality characteristic is normally distributed. Read More »

A process is in control with x double bar=75 and s-bar=2. The process specification are at 80±8. The sample size n=5.

A process is in control with x double bar=75 and s-bar=2. The process specification are at80±8. The sample size n=5. A. Estimate the potential capability. B. Estimate the actual capability,the ^ ^ Cpu and Cpl. C. How much could process fallout be reduced by shifting the mean to the nominal dimension? Assume that the quality characteristic …

A process is in control with x double bar=75 and s-bar=2. The process specification are at 80±8. The sample size n=5. Read More »