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Quiz: QuizO2 Time Remaining: 00:35:45 Submit Qubz This Question: 9 pts 5 of 16 (13 complete) This Quiz: 31 pts possible WestQuiz: QuizO2 Time Remaining: 00:35:33 Submit Quiz This Question: 9 pts 5of 16 (13 complete) This Quiz: 31 pts possible West BQuiz: QuizO2 Time Remaining: 00:35:23 Submit Quiz This Question: 9 pts 5 of 16 (13 complete) ▼ This Quiz: 31 pts possible wit

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Answer #1

1. Xbarbar =55.12

Rbar = 16.72

2. UCLxbar = Xbarbar + A2Rbar = 55.12 +0.577 x16.72 =64.76

LCLxbar = Xbarbar - A2Rbar = 55.12 - 0.577 x16.72 = 45.47

3. UCLR = D4 x Rbar = 2.115 x 16.72 =35.36

LCLR =D3 x Rbar =0

For sample 26 to 30

Hour / sample 1 2 3 4 5 Xbar R
26 54 56 45 61 66 56.4 21
27 51 58 53 52 70 56.8 19
28 68 54 56 51 58 57.4 17
29 62 76 51 58 66 62.6 25
30 49 44 50 58 56 51.4 14

Based on the R chart the process is in control

Based on the Xbar chart, the process is under control, as all Xbar values are within range.

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