Given the following information, what is the least squares estimate of the y-intercept? 
Definitions:
Populations
In statistics, it refers to the entire group of individuals or items that is the subject of a study.
Categories
Categories refer to classes or divisions in a classification system that group items, ideas, or entities based on common characteristics or attributes.
Chi-squared Goodness-of-fit
Chi-squared Goodness-of-fit tests how well observed data matches the expected data distribution in categories.
Two Categories
A classification into two distinct groups or divisions based on specific criteria.
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