Determine If the Outcome Is Unusual $\mu - 2 \sigma$ Or Greater Than

question 134

Multiple Choice

Determine if the outcome is unusual. Consider as unusual any result that differs from the mean by more than 2 standard deviations. That is, unusual values are either less than $\mu - 2 \sigma$ or greater than $\mu + 2 \sigma$ .
-A survey for brand recognition is done and it is determined that 68% of consumers have heard of Dull Computer Company. A survey of 800 randomly selected consumers is to be conducted. For such groups of 800, would it be unusual to get 541 consumers who recognize the Dull Computer Company name?

• A)Yes
• B)No

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Definitions:

Environmental Protection Agency

A federal agency tasked with protecting human health and the environment by enforcing regulations based on laws passed by Congress.

National Ambient Air Quality Standards

Standards established by the United States Environmental Protection Agency under the Clean Air Act that apply for outdoor air throughout the country.

EPA

The Environmental Protection Agency (EPA) is a U.S. federal agency responsible for protecting human health and the environment by enforcing regulations based on laws passed by Congress.

Clean Air Act

A federal law in the United States aimed at controlling air pollution on a national level by authorizing the Environmental Protection Agency (EPA) to establish standards for harmful pollutants.