Question

30. You are responsible for manufacturing the hinges used on the doors of Airbus A330 airplane. Since a close fit is required to ensure the doors stay airtight, statistical quality control is used to ensure the consistent high quality of the hinges. The data from five of yesterdays' samples are shown below. Observation Sample 0.348 0.353 0.351 0.347 0.351 0.349 0.354 0.356 0.345 0.357 0.348 0.351 0.342 0.355 0.361 0.349 0.349 0.35 0.354 0.349 5 What is the value of LCLR? a. Less than or equal to 0.021 b. Greater than 0.021 but less than or equal to 0.024 c. Greater than 0.024 but less than or equal to 0.027 d. Greater than 0.027

Answer 1

Solution:

Sample 1 2 3 4 Range 0.351 1 0.356 0.348 0.349 0.008 2 0.347 0.345 0.353 0.349 0.008 0.351 0.357 0.342 0.35 0.015 4 0.349 0.348 0.355 0.354 0.007 5 0.354 0.351 0.361 0.349 0.012 R = 0.01 LCL2 DR 0x0.01 = 0

30. You are responsible for manufacturing the hinges used on the doors of Airbus A330 airplane. Since a close fit is required to ensure the doors stay airtight, statistical quality control is used to ensure the consistent high quality of the hinges. The data from five of yesterdays' samples are shown below. Observation 1 2 3 Sample 0.349 1 0.351 0.356 0.348 0.353 2 0.347 0.345 0.349 3 0.351 0.357 0.342 0.35 0.349 0.354 4 0.348 0.355 0.351 5 0.354 0.361 0.349 What is the value of LCLR? a. Less than or equal to 0.021 b. Greater than 0.021 but less than or equal to 0.024 Greater than 0.024 but less than or equal to 0.027 C. d. Greater than 0.027