In a Hypothesis Test for the Population Variance,the Hypotheses Are $\sigma$

question 134

Multiple Choice

In a hypothesis test for the population variance,the hypotheses are H₀: $\sigma$ ² = 30 vs.H₁: $\sigma$ ² < 30.If the sample size is 20 and the test is being carried out at the 5% level of significance,the null hypothesis is rejected if:

• A) \(\chi\)² < 30.144.
• B) \(\chi\)² > 10.851.
• C) \(\chi\)² < 10.117.
• D) \(\chi\)² > 31.410.

---

Definitions:

Contaminants

Any substance or agent that makes something impure or harmful, often found in the environment, food, or water.

CERCLA

Comprehensive Environmental Response, Compensation, and Liability Act; a federal law designed to clean up sites contaminated with hazardous substances.

Hazardous Waste

Waste material that can pose a threat to public health or the environment due to its toxic, corrosive, ignitable, or reactive properties.

Superfund

A program by the U.S. federal government aimed at financing the remediation of locations polluted with hazardous materials and substances.