Modern Business Statistics with Microsoft Office Excel (with XLSTAT Education Edition Printed Access Card) (MindTap Course List)
6th Edition
ISBN: 9781337115186
Author: David R. Anderson, Dennis J. Sweeney, Thomas A. Williams, Jeffrey D. Camm, James J. Cochran
Publisher: Cengage Learning
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Chapter 19.2, Problem 4E
To determine
Obtain the upper and lower control limits for
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A process sampled 20 times with a sample of size 8 resulted in x = 28.5 and R = 1.6.Compute the upper and lower control limits for the x and R charts for this process.
Twenty-five samples of size 5 resulted in x = 5.42 and R = 2.0. Compute control limitsfor the x and R charts, and estimate the standard deviation of the process.
A manufacturer producing cocacola drinks wanted to set the specification of production to achieve process capability. He set his Upper Control Limit (UCL) = 0.03, proportion of defective items as 0.02. Calculate the number of sample observations (n) to be used to ensure 99.74 of the value.
Chapter 19 Solutions
Modern Business Statistics with Microsoft Office Excel (with XLSTAT Education Edition Printed Access Card) (MindTap Course List)
Ch. 19.2 - 1. A process that is in control has a mean of =...Ch. 19.2 - 2. Twenty-five samples, each of size 5, were...Ch. 19.2 - Prob. 3ECh. 19.2 - Prob. 4ECh. 19.2 - Prob. 5ECh. 19.2 - Prob. 6ECh. 19.2 - Prob. 7ECh. 19.2 - Prob. 8ECh. 19.2 - Prob. 9ECh. 19.3 - 10. For an acceptance sampling plan with n = 25...
Ch. 19.3 - Prob. 11ECh. 19.3 - Prob. 12ECh. 19.3 - 13. Refer to the KALI problem presented in this...Ch. 19.3 - Prob. 14ECh. 19 - Prob. 16SECh. 19 - Prob. 17SECh. 19 - Prob. 18SECh. 19 - The following are quality control data for a...Ch. 19 - The following were collected for the Master Blend...Ch. 19 - An insurance company samples claim forms for...Ch. 19 - Prob. 22SECh. 19 - 23. An n = 10, c = 2 acceptance sampling plan is...Ch. 19 - Prob. 24SE
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- Twenty-five samples, each of size 5, are drawn from a process at one-hourintervals, and the following data are obtained: Calculate trial control limits for ?̅ and S charts.arrow_forwardover several weeks of normal, or in-control, operation, 20 samples of 150 packageseach of synthetic-gut tennis strings were tested for breaking strength. A total of 141packages of the 3000 tested failed to conform to the manufacturer’s specifications.a. what is an estimate of the process proportion defective when the system is in control?b. Compute the upper and lower control limits for a p chart.c. with the results of part (b), what conclusion should be made about the process if testson a new sample of 150 packages find 12 defective? Do there appear to be assignablecauses in this situation?d. Compute the upper and lower control limits for an np chart.e. Answer part (c) using the results of part (d)arrow_forwardover several weeks of normal, or in-control, operation, 20 samples of 150 packageseach of synthetic-gut tennis strings were tested for breaking strength. A total of 141packages of the 3000 tested failed to conform to the manufacturer’s specifications.a. what is an estimate of the process proportion defective when the system is in control?b. Compute the upper and lower control limits for a p chart.c. with the results of part (b), what conclusion should be made about the process if testson a new sample of 150 packages find 12 defective? Do there appear to be assignablecauses in this situation?d. Compute the upper and lower control limits for an np chart.e. Answer part (c) using the results of part (d).f. which control chart would be preferred in this situation? Explain.arrow_forward
- over several weeks of normal, or in-control, operation, 20 samples of 150 packageseach of synthetic-gut tennis strings were tested for breaking strength. A total of 141packages of the 3000 tested failed to conform to the manufacturer’s specifications.a. what is an estimate of the process proportion defective when the system is in control?b. Compute the upper and lower control limits for a p chart.c. with the results of part (b), what conclusion should be made about the process if testson a new sample of 150 packages find 12 defective? Do there appear to be assignablecauses in this situation?arrow_forwardIf mu and sigma are the process mean and sd then the control limits mu+or- 3sigma are know asarrow_forwardA process sampled 20 times with a sample of size 8 resulted in = 26.5 and R = 1.8. Compute the upper and lower control limits for the x chart for this process. (Round your answers to two decimal places.) UCL= LCL= Compute the upper and lower control limits for the R chart for this process. (Round your answers to two decimal places.) UCL= LCL=arrow_forward
- Find the t-value that form the boundaries of the critical region for a two-tailed test with a= 0.01 and a sample size of 25.arrow_forwardWith α = .01, the two-tailed critical region for a t test using a sample of n = 16 subjects would have boundaries ofarrow_forwardThe following values of saturation drain current ( ID, sat ) were collected from several test wafers with a sample size of n = 5. Calculate the centerlines and control limits.arrow_forward
- With α = .05, the two-tailed critical region for a t test using a sample of n = 20 participants would have boundaries of _____.arrow_forwardAll other things being equal, as the degrees of freedom increase, what happens to the critical value for a related-samples t test (or for any t test, for that matter)?arrow_forwardWhat is the difference between the critical value of z and the observed value of z?arrow_forward
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Introduction to Statistical Quality Control (SQC); Author: FORSEdu;https://www.youtube.com/watch?v=c18FKHUDZv8;License: Standard YouTube License, CC-BY
[DAXX] Introduction to Statistical Quality Control; Author: The Academician;https://www.youtube.com/watch?v=ypZGDxjSM60;License: Standard Youtube License