Essay
A glass company produces panes of glass that have specifications for a thickness of 0.3 inches.The process standard deviation is known to be 0.04 inches.A random sample of 45 panes of glass has an average thickness of 0.322 inches.What is the 90% confidence interval around the mean? What can we say about this process?
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0.312 inches,0.332 inches.Sinc...View Answer
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