Five AC adaptors that are used to charge batteries of a cellular phone are taken from the
Question:
Five AC adaptors that are used to charge batteries of a cellular phone are taken from the production line each 15 min and tested for their direct-current output voltage. The output voltages for 24 sample subgroups are as follows:
Find the central line, UCL, and LCL for the mean.
Transcribed Image Text:
Subgroup 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Output Voltages of Five Adaptors 9.03 9.08 8.85 8.92 8.90 9.05 8.98 9.20 9.04 9.12 8.93 8.96 9.14 9.06 9.00 9.16 9.08 9.04 9.07 8.97 9.03 9.08 8.93 8.88 8.95 8.92 9.07 8.86 8.96 9.04 9.00 9.05 8.90 8.94 8.93 8.99 8.96 9.02 9.03 8.92 9.05 9.10 8.93 9.00 9.09 8.96 8.98 8.97 8.92 8.98 9.03 9.06 8.94 8.93 8.92 8.94 8.99 8.93 9.05 9.10 9.07 9.01 9.05 8.96 9.01 8.82 8.95 8.99 8.93 8.91 9.04 9.05 8.90 9.08 9.03 8.91 8.92 8.96 8.94 8.90 9.05 8.93 9.01 8.88 8.82 8.89 8.94 8.88 9.04 9.00 8.98 8.93 9.05 9.00 9.03 8.94 8.92 9.05 8.95 8.95 8.91 8.90 9.03 9.12 9.04 9.01 8.94 9.02 8.94 8.99 8.93 9.05 9.07 8.87 8.89 9.01 8.90 9.04 9.02 9.04
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To find the control limits for the mean chart we need to first calculate the mean and standard devia...View the full answer
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Related Book For
Basic Technical Mathematics
ISBN: 9780137529896
12th Edition
Authors: Allyn J. Washington, Richard Evans
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