A manager at a local bank analyzed the relationship between weekly sales (in $) and length of service (in months) for 30 employees. The table below summarizes a portion of the regression results: 
Can the manager conclude that there is a positive linear relationship between sales and service? Carry out the test of hypothesis if 
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Definitions:
Political Ideology
A set of beliefs or ethics about how society should work and the role of government in it, often related to the political spectrum from left to right.
Stratified Societies
Societies in which people are hierarchically divided and ranked into social strata, or layers, and do not share equally in basic resources that support income, status, and power.
Indian Caste System
A hierarchical and traditional division of society into hereditary classes that dictate the occupation, social status, and marital alliances of its members.
Estates
Social or economic classes, particularly those seen in pre-modern societies, or refers to a large area of land owned by an individual or family.
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