Over several weeks of normal, or in-control, operation 20 samples of 150 packages each of synthetic-gut tennis strings were tested for breaking strength. A total of 125 packages of the 3000 tested failed to conform to the manufacturer's specifications. a. What is the estimate of the process proportion defective when the system is in control? b. Compute the upper control and the lower control limits for a p-chart. c. With the results of part (b), what conclusion should be made about the process if tests on a new sample of 150 packages find 12 defective? Do there appear to be assignable causes 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? Why ?

Algebra & Trigonometry with Analytic Geometry
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Assignment 7 - Excel
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Over several weeks of normal, or in-control, operation 20 samples of 150 packages each of synthetic-gut tennis strings were tested for breaking strength. A total of 125 packages of the 3000
5
tested failed to conform to the manufacturer's specifications.
6
a. What is the estimate of the process proportion defective when the system is in control?
7
b. Compute the upper control and the lower control limits for a p-chart.
8
c. With the results of part (b), what conclusion should be made about the process if tests on a new sample of 150 packages find 12 defective? Do there appear to
be assignable causes in this situation?
10
d. Compute the upper and lower control limits for an np chart?
11
e. Answer part "c" using the results of part (d).
12
f. Which control chart would be preferred in this situation? Why ?
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8:48 PM
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4/25/2021
Problem 1
Problem 2
Problem 3
Problem 4
Problem 5
囲
目
+
100%
Transcribed Image Text:Assignment 7 - Excel P Search A Emerson Oakes EO 困 AutoSave Off File Home Insert Page Layout Formulas Data Review View Help 8 Share P Comments Insert v Σ - A A° = = a Wrap Text Calibri v 11 General DX Delete v Paste BIU - E A = EE E = E Merge & Center - $ • % 9 8 98 Conditional Format as Cell Sort & Find & Analyze Formatting v Table Styles - H Format v Filter v Select v Data Clipboard Font Alignment Number Styles Cells Editing Analysis D13 fe X A B D E H K L. N P R 3 4 Over several weeks of normal, or in-control, operation 20 samples of 150 packages each of synthetic-gut tennis strings were tested for breaking strength. A total of 125 packages of the 3000 5 tested failed to conform to the manufacturer's specifications. 6 a. What is the estimate of the process proportion defective when the system is in control? 7 b. Compute the upper control and the lower control limits for a p-chart. 8 c. With the results of part (b), what conclusion should be made about the process if tests on a new sample of 150 packages find 12 defective? Do there appear to be assignable causes in this situation? 10 d. Compute the upper and lower control limits for an np chart? 11 e. Answer part "c" using the results of part (d). 12 f. Which control chart would be preferred in this situation? Why ? 13 14 15 16 17 18 19 > 20 21 22 23 24 4) 25 8:48 PM 26 4/25/2021 Problem 1 Problem 2 Problem 3 Problem 4 Problem 5 囲 目 + 100%
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9781133382119
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Swokowski
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