We are interested in knowing if the following frequency distribution is normally distributed. The mean and standard deviation of the data is 600 and 160. 
To test the hypothesis that the frequency distribution is normally distributed, we estimate two population parameters. What are they?
Definitions:
Social Categories
Classifications of people based on shared qualities or characteristics such as age, gender, race, religion, and social status.
Social Groups
Collections of individuals who interact based on shared interests, beliefs, or characteristics, forming a structure within which social relations occur.
Daily Interaction
Refers to the routine communication and activities that occur between individuals on a regular day-to-day basis.
Withdrawal
The act of removing oneself from participation or involvement in a particular activity, situation, or substance use.
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