Exhibit 8-3 A Random Sample of 81 Automobiles Traveling on a Section

question 45

Multiple Choice

Exhibit 8-3
A random sample of 81 automobiles traveling on a section of an interstate showed an average speed of 60 mph. The distribution of speeds of all cars on this section of highway is normally distributed, with a standard deviation of 13.5 mph.
-Refer to Exhibit 8-3. The value to use for the standard error of the mean is

• A)13.5
• B)9
• C)2.26
• D)1.5

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Definitions:

Big Five Traits

A model that outlines five broad dimensions of personality: openness, conscientiousness, extraversion, agreeableness, and neuroticism, used to describe human personality.

Neuroticism

Neuroticism is a personality trait characterized by a tendency to experience negative emotions such as anger, anxiety, or depression more frequently and intensely than others.

Agreeableness

One of the five major dimensions of personality, characterized by attributes such as kindness, empathy, and a willingness to cooperate and get along with others.

Extraversion

A personality trait characterized by outgoingness, high energy, and positive emotions; extraverts tend to enjoy being around people.