Consider the following work breakdown structure: 
What is the estimated expected (mean) time for activity E?
Definitions:
Ethnic Heritages
The traditions, customs, and identities passed down through generations among people with a common ethnic background.
Socio-economic Status
An individual's or group's position within a societal hierarchy, determined by factors such as income, education, and occupation.
Empowering Members
The process of giving group or team members the authority, confidence, and means to increase control over their own lives or work.
Mutual Aid
Mutual aid refers to a system of voluntary reciprocal exchange of resources and services for mutual benefit.
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Q100: Consider the following work breakdown structure: <img