Quality management

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answer the question 2

answer the question what do you want the right choice

answer the question what do you want the right choice

QUESTION 2 R Part manufactured by an injection modeling process are subjected to a compressive strength test. Five samples of three parts each are collected, and the compressive strengths (in psi) are shown in the following table. (a) Establish x-bar and control charts for compressive strength using these data. (b) Apply Western Electric Rules to these charts. Is the process in statistical control? Estimate the process mean and standard deviation Sample Number x1 x2 x3 x bar 1 84.6 81.2 79 81.60 5.60 2 88.6 84.2 83.32 3 82.9 75.8 84.3 81.00 8.50 4 70.2 74.4 72.5 72.37 5 78.8 78.4 82.6 4.20 Grand Average Average Range Attach File Browse My Computer Browse Content Collection QUESTION 9 Apply the Western Electric Rules to the chart. Is the process in statistical control? 35 UCL 25 15 ro s R Q CL 8 16 to 1 1 i 1 1 of -15 - - - - - - 1 1 1 1 1 1 1 1 1 -25 - - - -- 1 - -- - - 1 - 1 LCL 0 2 4 6 8 10 12 14 16 18 20 A. Out of control, Rule #3 B. Out of control, Rule #1 OC. Out of control, Rule #4 D. Out of control, Rule #2 E. In control QUESTION 10 The 50th percentile is generally the mean. True False QUESTION 7 Apply the Western Electric Rules to the chart. Is the process in statistical control? 35 UCL 25 15 5 WA CL -15 - -- - -- - -- - -35 LCL 14 16 18 20 A. In control B. Out of control, Rule #4 C. Out of control, Rule #1 D. Out of control, Rule #2 E. Out of control, Rule #3