The graph shown gives the weight of a certain person as a function of age.Find the age at which the person started an exercise program. 
Definitions:
Ferris State University
A public university located in Big Rapids, Michigan, known for its comprehensive educational programs.
Chi-Square Distributions
A statistical distribution that is used to assess how likely it is that an observed distribution is due to chance, especially useful for categorical data.
Skewed to the Right
A distribution where the tail on the right side of the histogram is longer or fatter than the left side.
Chi-Square Random Variable
Represents a distribution that arises from squaring a standard normal distribution, commonly used in hypothesis testing.
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