Sarah Soliz, Director of Quality Programs, is designing 
and R charts for the rod shearing process at Stockton Steel.She has 26 samples of rod length, and each sample included measurements of 5 rods.The mean of the 26 sample means is 112 centimetres, and mean of the 26 ranges is 0.15 centimetres.The upper control limit for her 
chart is ___.
Definitions:
Thomas Eakins
An influential American painter known for his realistic portrayal of everyday life, human anatomy, and sports, in the late 19th and early 20th centuries.
Documentary Images
Photographs, videos, or any visual media that are intended to document reality, often used in journalism, research, and historical records.
Civil War Battles
Conflicts fought within a country between differing factions, regions, or political entities.
Alexander Gardner
A notable 19th-century photographer, known for his documentation of the American Civil War and his portraits of famous figures.
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