An owner of two cats is trying to decide if it is cheaper to order cat food over the Internet or to buy the food locally. Listed below are the prices (in dollars) quoted for two bags of cat food from various manufacturers. 
Set up the alternative hypothesis for the claim that buying over the Internet (I) is cheaper than buying from the local stores (E) .
Definitions:
Penetrate
To enter or pass through something, often by overcoming resistance.
Lungs' Natural Defences
Mechanisms within the respiratory system that protect the lungs from infection and pollution, including mucous production and cilia action.
World Health Organization
An international public health agency of the United Nations dedicated to improving health conditions and achieving the highest level of health for all people worldwide.
Annual Human Death Rate
The number of deaths per year per 1,000 or 100,000 people in a population, used to measure the mortality rate of a specific area.
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