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Question
When the sample size and sample standard deviation remain the same, a 99 percent confidence interval for a population mean, 
, will be _________________ the 95 percent confidence interval for .
A. wider than
B. narrower than
C. equal to
Answer
This answer is hidden. It contains 2 characters.
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Q:
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C. a downward trend on the R chart.
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If a company is using an chart for a given process with measurement data, it is generally not important or necessary to use an R chart or s chart.
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Control charts are used to reduce common causes of variation.
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An chart is a control chart on which individual process measurements are plotted versus time.
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