A two-tailed test for two population variances could have a null hypothesis like the following: 
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Definitions:
Hispanic Americans
Americans who are descendants of people from countries of Latin America and the Iberian Peninsula.
Health Insurance
A type of insurance coverage that pays for an insured individual's medical and surgical expenses in part or in full.
Malaria
A life-threatening disease caused by parasites that are transmitted to people through the bites of infected female Anopheles mosquitoes.
Kidney Disease
A medical condition characterized by the gradual loss of kidney function over time, leading to the accumulation of waste products and fluids in the body.
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