Let each subgroup consist of the 10 values within a decade. Construct an chart and determine whether

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Let each subgroup consist of the 10 values within a decade. Construct an chart and determine whether the process mean is within statistical control. If it is not, identify which of the three out-of-control criteria lead to rejection of a statistically stable mean.

Use the data in the following table, which lists carbon dioxide concentrations (in parts per million) for each year from 1880 to 2009, with projected values used for the last four years. Atmospheric carbon dioxide is believed to be the result of human activity and a major contributor to the greenhouse effect that is at least partly responsible for global warming.

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Elementary Statistics

ISBN: 9780321500243

11th Edition

Authors: Mario F. Triola

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