Lucy Baker Is Analyzing Demographic Characteristics of Two Television Programs $\sigma$

question 29

Multiple Choice

Lucy Baker is analyzing demographic characteristics of two television programs, American Idol (population 1) and 60 Minutes (population 2) . Previous studies indicate no difference in the ages of the two audiences. (The mean age of each audience is the same.) Her staff randomly selected 100 people from each audience, and reported the following: ₁ = 43 years and
₂ = 45 years. Assume that $\sigma$ ₁ = 5 and $\sigma$ ₂ = 8. With a two-tail test and $\alpha$ =.05, the critical z values are ___.

• A) -1.64 and 1.64
• B) -1.96 and 1.96
• C) -2.33 and 2.33
• D) -2.58 and 2.58
• E) -2.97 and 2.97

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Definitions:

Neuron

A distinct cell responsible for conducting nerve messages; referred to as a nerve cell.

Neural Message

The information conveyed by neurons through electrical and chemical signals across synapses to communicate with other neurons, muscles, or glands.

Resting Potential

The electrical charge difference across the neuronal membrane when the neuron is not actively firing.

Action Potential

A brief electrical impulse by which information is transmitted along the axon of a neuron.