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Use the following information to answer the question. The economic impact of an industry, such as sport fishing, can be measured by the retail sales it generates. In 2006, the economic impact of great lakes fishing in states bordering the great lakes had a mean of $318 and a standard deviation of $83.5. Note that all dollar amounts are in millions of dollars. Assume the distribution of retail sales is unimodal and symmetric. (Source: National Oceanic and Atmospheric Administration) .
-The economic impact of fishing for nearly all great lakes states should fall within what range (in millions of dollars) ?
Primary Succession
Ecological succession that occurs in an area where no biotic community previously existed, starting from bare rock or a completely uninhabited area.
Secondary Succession
The ecological process of recovery and change in an ecosystem that occurs after a disturbance has partially or completely removed the previous community but left the soil intact.
Soil Horizons
Layers in the soil, each with its own distinct characteristics such as composition, texture, and color, developed over time.
Facilitation Model
A concept in ecology suggesting that the presence of one species positively affects the growth, establishment, or reproduction of another species, often leading to a more complex community structure.
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