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)?
A)$234.5 to $401.5
B)$67.5 to $568.5
C)$151 to $485
D)$83.5 to $318

Question

Quizplus · Accepted Answer

The range for nearly all data in a unimodal and symmetric distribution (approximately 95%) is within two standard deviations from the mean. Therefore, the range is $318 ± 2($83.5), which is $151 to $485 million.

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