The birth weights (in kilograms) of a sample of 160 children are given in the following table. What is the mean of the weights? Round your answer to two decimal places. 
Definitions:
Illusory Correlation
A cognitive bias wherein people falsely perceive an association between two events or situations.
Heuristic Overbias
The tendency to over-rely on heuristic approaches when making decisions, often at the expense of more accurate or rational methods.
Self-serving Attribution
A common bias where individuals attribute their successes to internal or personal factors and their failures to external or situational factors.
Physical Appearance
The outward look or aspects of objects or persons, including bodily shape, features, and attributes.
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