Eight samples of size 2 were taken from a lot of screws. The values (length in inches)
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Eight samples of size 2 were taken from a lot of screws. The values (length in inches) are
Assuming that the population is normal with mean 3.500 and variance 0.0004 and using (1), set up a control chart for the mean and graph the sample means on the chart.
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Sample No. 12 3 4 5 6 7 8 3.50 3.51 3.49 3.52 3.53 3.49 3.48 3.52 Length 3.51 3.48 3.50 3.50 3.49 3.50 3.47 3.49
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ANSWER To set up a control chart for the mean we will use the x chart The formula for the x c...View the full answer
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