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A histogram of the tire diameter measurements

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Unformatted text preview: to it plant for assembly. In order to keep the assembly operations running efficiently, it is vital that all parts be within specification limits. One important part used in the assembly is the engine camshaft and one important quality characteristic is the case hardness depth. Specifications state that the hardness depth must be between 3.0 mm and 6.0 mm. To investigate the process, the quality control engineer selected 25 daily subgroups of n = 5 and measured the hardness depth. The process yielded a mean of the means = 4.50 and an average range = 1.01. Calculate the center line for the X-bar chart. A. 1.01 B. 4.50 C. 3.49 D. 0.90 4.50 AACSB: Analytic Bloom's: Application Difficulty: Easy Learning Objective: 4 Topic: X-bar Control Charts 1-1745 Chapter 01 - An Introduction to Business Statistics 107. A motorcycle manufacturer produces the parts for its vehicles in different locations and transports them to it plant for assembly. In order to keep the assembly operations running efficiently, it is vital that all parts be within specification limits. One important part used in the assembly is the engine camshaft and one important quality characteristic is the case hardness depth. Specifications state that the hardness depth must be between 3.0 mm and 6.0 mm. To investigate the process, the quality control engineer selected 25 daily subgroups of n = 5 and measured the hardness depth. The process yielded a mean of the means = 4.50 and an average range = 1.01. Calculate the center line for the R chart. A. 1.01 B. 0.22 C. 4.50 D. 0.90 1.01 AACSB: Analytic Bloom's: Application Difficulty: Easy Learning Objective: 4 Topic: Range Control Charts 1-1746 Chapter 01 - An Introduction to Business Statistics 108. A motorcycle manufacturer produces the parts for its vehicles in different locations and transports them to it plant for assembly. In order to keep the assembly operations running efficiently, it is vital that all parts be within specification limits. One important part used in the assembly is the engine camshaft and one important quality characteristic is the case hardness depth. Specifications state that the hardness depth must be between 3.0 mm and 6.0 mm. To investigate the process, the quality control engineer selected 25 daily subgroups of n = 5 and measured the hardness depth. The process yielded a mean of the means = 4.50 and an average range = 1.01. Calculate the control limits for the X-bar chart. A. (4.345 4.655) B. (3.49 5.51) C. (3.917 5.083) D. (2.365 6.635) LCL = 3.917 UCL = 5.083 AACSB: Analytic Bloom's: Application Difficulty: Medium Learning Objective: 4 Topic: X-bar Control Charts 1-1747 Chapter 01 - An Introduction to Business Statistics 109. A motorcycle manufacturer produces the parts for its vehicles in different locations and transports them to it plant for assembly. In order to keep the assembly operations running efficiently, it is vital that all parts be within specification limits. One important part used in the assembly is the engine camshaft and one important quality characteristic is the case hardness depth. Specifications state that the hardness depth must be between 3.0 mm and 6.0 mm. To investigate the process, the quality control engineer selected 25 daily subgroups of n = 5 and measured the hardness depth. The process yielded a mean of the means = 4.50 and an average range = 1.01. Calculate the control limits for the R chart. A. (.464 1.556) B. (0 2.349) C. (0 2.114) D. (0 2.135) LCL = DNE UCL = 2.135 (2.114) (1.01) = 2.135 AACSB: Analytic Bloom's: Application Difficulty: Medium Learning Objective: 4 Topic: Range Control Charts 1-1748 Chapter 01 - An Introduction to Business Statistics 110. A motorcycle manufacturer produces the parts for its vehicles in different locations and transports them to it plant for assembly. In order to keep the assembly operations running efficiently, it is vital that all parts be within specification limits. One important part used in the assembly is the engine camshaft and one important quality characteristic is the case hardness depth. Specifications state that the hardness depth must be between 3.0 mm and 6.0 mm. To investigate the process, the quality control engineer selected 25 daily subgroups of n = 5 and measured the hardness depth. The process yielded a mean of the means = 4.50 and an average range = 1.01. Assuming that the process is in statistical control, calculate the natural tolerance limits for the process. A. (1.47 7.53) B. (3.197 5.803) C. (3.729 5.271) D. (4.066 4.934) 3.197, 5.803 4.50 ± 3(1.01/2.326) = 3.197 to 5.803 AACSB: Analytic Bloom's: Application Difficulty: Hard Learning Objective: 6 Topic: Process capability 1-1749 Chapter 01 - An Introduction to Business Statistics 111. A motorcycle manufacturer produces the parts for its vehicles in different locations and transports them to it plant for assembly. In order to keep the assembly operations running efficiently, it is vital that all parts be within specification limits. One i...
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