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

question 26

Multiple Choice

Lucy Baker is analyzing demographic characteristics of two television programs, Lost (population 1) and Heroes (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.Assuming a two-tail test and $\alpha$ = .05, the observed z value is ___.

• A)-2.12
• B)-2.25
• C)-5.58
• D)-15.38
• E)-20.68

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Definitions:

Gender Schema

Gender Schema is a cognitive framework that organizes information relating to gender and helps individuals understand and interpret gender-related information.

Appearance

The way that someone or something looks to other people, including physical features, clothing, and grooming.

Behavior

The actions or reactions of an entity (typically a person or animal) in response to external or internal stimuli.

Child Maltreatment

Physical, sexual, emotional abuse, or neglect of a child by a parent, caregiver, or another person resulting in harm or potential harm.