Professor Murphy wants to set up a control chart to monitor the percentage of absenteeism in his introductory statistics course (50 students are registered) .Absences per period for the last 15 class sessions are in the table below. 
Calculate the empirical centerline for a p-chart to track absences.
Definitions:
Principle of Utility
A fundamental concept in utilitarian ethics that suggests actions should be judged as right or wrong based on their outcomes, specifically their ability to produce the greatest happiness for the greatest number of people.
Greatest Happiness
A principle that suggests the best action is the one that maximizes happiness or pleasure for the greatest number of people.
Associated Pleasure
The enjoyment or satisfaction derived from a particular activity, object, or association.
Work Ethic
The belief in the moral benefit and importance of work and its inherent ability to strengthen character.
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