The following display from a TI-84 Plus calculator presents the results of a hypothesis test for a population mean μ. 
What is the value of s?
Definitions:
Paraguay
A landlocked country in South America known for its rich culture, history, and expansive natural landscapes, with a mixed economy that includes agriculture, manufacturing, and services sectors.
Televisions
Electronic devices designed to receive broadcast signals and display them as moving images and sound, serving as a primary source of entertainment and information.
World Price
The global market price of a commodity, determined by supply and demand dynamics across international markets.
Uruguay
A country in South America, known for its verdant interior and seaside capital, Montevideo, with a stable democracy and high levels of social spending.
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