What Is the 95% Confidence Interval for the Standard Deviation $0.8 < \sigma < 2.1$

question 119

Multiple Choice

What is the 95% confidence interval for the standard deviation of birth weights at County General Hospital, if the standard deviation of the last 25 babies born there was
1) 1 pounds?

• A) \(0.8 < \sigma < 2.1\)
• B) \(0.9 < \sigma < 1.5\)
• C) \(0.8 < \sigma < 1.9\)
• D) \(0.7 < \sigma < 2.3\)

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Definitions:

Vertebrates

Animals with a backbone or spinal column, which includes fish, amphibians, reptiles, birds, and mammals.

Hemoglobin

A protein in red blood cells that carries oxygen from the lungs to the tissues of the body and returns carbon dioxide from the tissues to the lungs.

Antibodies

Proteins produced by the immune system that recognize and bind to specific foreign substances called antigens to neutralize or destroy them.

Histamine

A compound found in body cells that plays a major role in allergic reactions, acting as a neurotransmitter and involved in the regulation of stomach acid.