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# A foreman wants to use an chart to control the

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Unformatted text preview: ity 1-1738 Chapter 01 - An Introduction to Business Statistics 98. Suppose that and R charts are based on subgroups of size four are being used to monitor the tire diameter size of a new radial tire manufactured by a tire company. The and R charts are found to be in statistical control with inches. A histogram of the tire diameter measurements indicates that distribution of these measurements is approximately normally distributed. Calculate the estimate of the percentage of tires that are out of specification. A. 1.93% B. 2.68% C. 1.62% D. 17.36% .0268 LSL = 50 - 1 = 49 USL = 50 + 1 = 51 Estimated percentage of tires not meeting the specifications is 2.68%. AACSB: Analytic Bloom's: Application Difficulty: Hard Learning Objective: 6 Topic: Process capability 1-1739 Chapter 01 - An Introduction to Business Statistics 99. Suppose that and R charts are based on subgroups of size four are being used to monitor the tire diameter size of a new radial tire manufactured by a tire company. The and R charts are found to be in statistical control with inches. A histogram of the tire diameter measurements indicates that distribution of these measurements is approximately normally distributed. Find the sigma level capability of the process. A. 1.93 B. 3.22 C. 0.64 D. 0.22 1.93 LSL = 50 - 1 = 49 USL = 50 + 1 = 51 AACSB: Analytic Bloom's: Application Difficulty: Hard Learning Objective: 6 Topic: Process capability 1-1740 Chapter 01 - An Introduction to Business Statistics 100. Among other quality measures, the quality of an electronic component used in manufacturing stereo speakers is monitored with a p-chart. In the last 25 days daily samples 60 units resulted in the following number of defective units per sample: 8, 4, 3, 7, 6, 2, 5, 3, 1, 0, 7, 4, 2, 0, 1, 6, 2, 4, 3, 1, 2, 8, 5, 6, 0. Determine the center line for this process. A. .06 B. .03 C. .001 D. .056 .06 AACSB: Analytic Bloom's: Application Difficulty: Medium Learning Objective: 7 Topic: P-Chart Control Charts 1-1741 Chapter 01 - An Introduction to Business Statistics 101. Among other quality measures, the quality of an electronic component used in manufacturing stereo speakers is monitored with a control chart. In the last 25 days daily samples 60 units resulted in the following number of defective units per sample: 8, 4, 3, 7, 6, 2, 5, 3, 1, 0, 7, 4, 2, 0, 1, 6, 2, 4, 3, 1, 2, 8, 5, 6, and 0. Determine the appropriate upper and lower control limits for this process. A. (.029 .091) B. (.056 .064) C. (0 .152) D. (0 .202) 0 and 0.152 AACSB: Analytic Bloom's: Application Difficulty: Medium Learning Objective: 7 Topic: P-Chart Control Charts 1-1742 Chapter 01 - An Introduction to Business Statistics 102. The quality of an electronic component used in manufacturing cell phones is monitored with a p-chart. In the last 20 days daily samples of 75 units resulted in the following number of defective units per sample: 8, 4, 3, 7, 3, 1, 0, 7, 4, 2, 0, 1, 6, 2, 4, 3, 1, 2, 8, 5 Find the appropriate center line. A. .0473 B. .2667 C. .1067 D. .0133 .0473 AACSB: Analytic Bloom's: Application Difficulty: Medium Learning Objective: 7 Topic: P-Chart Control Charts 103. The quality of an electronic component used in manufacturing cell phones is monitored with a p-chart. In the last 20 days daily samples of 75 units resulted in the following number of defective units per sample: 8, 4, 3, 7, 3, 1, 0, 7, 4, 2, 0, 1, 6, 2, 4, 3, 1, 2, 8, 5 Find the LCL and UCL for the p-chart A. (0 .1208) B. (.0228 .0718) C. (0 .1897) D. (.0445 .0501) 0 and .1208 AACSB: Analytic Bloom's: Application Difficulty: Medium Learning Objective: 7 Topic: P-Chart Control Charts 1-1743 Chapter 01 - An Introduction to Business Statistics 104. The quality of an electronic component used in manufacturing cell phones is monitored with a p-chart. In the last 20 days daily samples of 75 units resulted in the following number of defective units per sample: 8, 4, 3, 7, 3, 1, 0, 7, 4, 2, 0, 1, 6, 2, 4, 3, 1, 2, 8, 5 If on the 21st day, 9 defective units were found in the sample of 75 units, would the process be in control? A. Yes B. No Yes, would be in control because is within the UCL AACSB: Analytic Bloom's: Analysis Difficulty: Medium Learning Objective: 7 Topic: P-Chart Control Charts 105. Suppose that and R charts are based on subgroups of size four are being used to monitor the tire diameter size of a new radial tire manufactured by a tire company. The and R charts are found to be in statistical control with inches. A histogram of the tire diameter measurements indicates that distribution of these measurements is approximately normally distributed. Compute the natural tolerance limits for this process. A. (48.68 52.32) B. (49.89 51.11) C. (48.86 52.14) D. (46.75 54.25) 48.68 and 52.32 AACSB: Analytic Bloom's: Application Difficulty: Hard Learning Objective: 6 Topic: Process capability 1-1744 Chapter 01 - An Introduction to Business Statistics 106. A motorcycle manufacturer produces the parts for its vehicles in different locations and transports them...
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