The sales manager of a large multinational corporation is concerned that some salespersons perform very well and others quite poorly. To help analyze the problem he draws a random sample of 20 salespersons, determines their commission incomes (in thousands of dollars), and calculates the following statistics: 
= $37.2, and s = $7.8. Do these statistics provide sufficient evidence at the 5% significance level to conclude that the population variance exceeds $35 million2?
Definitions:
Elastic Cartilage
A type of flexible cartilage found in areas like the ears and epiglottis, providing strength and elasticity.
External Ears
The outer parts of the ear, including the pinna and the ear canal, which collect sound waves and direct them inward.
Collagen Fibers
Strong, insoluble protein fibers that are the main component of connective tissue, providing structural support and tensile strength.
Dense Connective Tissue
A type of connective tissue with high tensile strength that provides support and protection, composed mainly of tightly packed collagen fibers.
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