Afollow-up study was conducted on 3000 military troops deployed at an atomic test site in nevada to detect the occurrence of leukemia. a total 1870 people were successfully traced by investigators, and 443 contacted the investigators on their own as a result of publicity about the study. 4 cases of leukemia occurred among the 1870 people traced, and an additional 4 occurred among those individuals who contacted investigators on their own. could this be subject to bias?

The probability of the study result being subject to bias while interpreting it's a YES

Explanation:

Probability of Leukemia

A. Among traced group

= 4/1,870 persons.

B. Among self-reported group

= 4/443 person.

We can deduce

A higher rate of occurrence in self-reported group which could be causesd by fear of leukemia occurrence or suspicion of their previous exposure at atomic sites

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the relative standard reduction potential of the half-cell in which reduction occurs; more positive than the other half-cell. reduction is a chemical process in which electrons are added to an atom or an ion; it always occurs accompanied by oxidation of the reducing agent.