Determine If the Outcome Is Unusual $\mu - 2 \sigma \text { or greater than } \mu + 2 \sigma \text {. }$

question 114

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 $\mu - 2 \sigma \text { or greater than } \mu + 2 \sigma \text {. }$
-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 522 consumers who recognize the Dull Computer
Company name?

• A) Yes
• B) No

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Definitions:

Normally Distributed

Describes a dataset that follows a normal distribution curve, characterized by its bell shape and defined by its mean and standard deviation.

Standard Deviation

An index measuring the breadth of diversity or spread among data points.

Average Wage

The mean salary or earnings of a group of workers, calculated by dividing the total wages of the group by the number of workers.

Exponential Distribution

A probability distribution that describes the time between events in a process where events occur continuously and independently at a constant average rate.