Exhibit 9-4

question 53

Multiple Choice

Exhibit 9-4.A school teacher is worried that the concentration of dangerous,cancer-causing radon gas in her classroom is greater than the safe level of 4pCi/L.The school samples the air for 36 days and finds an average concentration of 4.4pCi/L with a standard deviation of 1pCi/L. Refer to Exhibit 9-4.At a 5% significance level,the critical value(s) is (are) _______.

• A)-1.690
• B)1.690
• C)-1.96 and 1.96
• D)-2.030 and 2.030

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Definitions:

Interdependence

A relationship between entities where each is mutually dependent on the other, often used to describe economic or ecological systems.

Acculturation

The process of adopting the cultural traits or social patterns of another group, especially by contact and interaction.

Diffusion of Responsibility

A sociopsychological phenomenon whereby a person is less likely to take responsibility for action or inaction when others are present.

Just-World Hypothesis

The belief that the world is fundamentally fair, leading people to rationalize an otherwise inexplicable injustice as deserved by the victim.