The following display from a TI-84 Plus calculator presents the results of a hypothesis test for a population proportion p. 
What is the value of the sample proportion ?
Definitions:
Monopolistically Competitive
A market structure characterized by many firms selling products that are substitutes but differentiated from one another.
Economic Profit
A firm's total revenues minus its explicit and implicit costs; a measure of performance that includes opportunity costs.
Efficient Level
The optimal point of production or operation where a firm, market, or economy can achieve the best possible outcome with the least waste of resources.
Society's Point
A perspective or consideration based on the collective interests or well-being of a community or society as a whole.
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