A new printing machine is set or calibrated to print 25 copies per minute. On each of four days, the printer's output is measured five times. The data will be used to construct a process control chart to monitor the printing process. The results of the printing process are in the following table. 
What is the mean for Day 1?
Definitions:
Ascriptive
Referring to qualities or characteristics attributed to a person based on inherent traits or societal assumptions, such as race, gender, or age, rather than individual merit or achievement.
Seymour Martin Lipset
An American sociologist and political scientist known for his work on the sociology of democracy, social stratification, and the conditions that foster right-wing extremism.
Statuses
Positions that individuals hold in the social structure, which come with sets of expected behaviors, rights, and obligations.
Symbol
Something that stands for or represents something else.
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