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

question 148

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 481 consumers who recognize the Dull Computer Company name?

• A)No
• B)Yes

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Definitions:

Retina

A layer at the back of the eyeball containing cells sensitive to light, which trigger nerve impulses that pass via the optic nerve to the brain.

Rods and Cones

Photoreceptor cells in the retina of the eye where rods are responsible for vision at low light levels, and cones handle color vision and detail.

Olfactory Cells

Sensory cells located in the olfactory epithelium of the nose involved in the detection of odors, playing a key role in the sense of smell.

Muscle Spindles

Sensory receptors within the belly of muscles, responding to stretch and actively participating in the regulation of muscle contraction.