A Study Was Conducted Among a Certain Group of Union

question 190

Multiple Choice

A study was conducted among a certain group of union members whose health insurance policies required second opinions prior to surgery. Of those members whose doctors advised them to have surgery, 20% were informed by a second doctor that no surgery was needed. Of these, 70% took the second doctor's opinion and did not go through with the surgery. Of the members who were advised to have surgery by both doctors, 95% went through with the surgery. What is the probability that a union member who had surgery was advised to do so by a second doctor?

• A) 0.5
• B) 0.93
• C) 0.15
• D) 0.81

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Definitions:

Radioactive Dump Site

An area designated for the disposal of radioactive waste materials, which poses significant long-term environmental and health risks.

Acute Effect

Immediate or short-term physiological or health outcome resulting from exposure to a hazardous substance or environmental factor.

Kidney Damage

Harm caused to the kidneys, vital organs responsible for filtering waste products from the blood, which can lead to reduced function or kidney failure.

Toxic Chemical

A substance that can cause harm to organisms through chemical reactions or other actions on the molecular scale, often dangerous to human health and the environment.