1. Voluntary response samples often under represent people with strong opinions. 2. Convenience samples often lead to under coverage bias. 3. Questionnaires with non-neutral wording are likely to have response bias. 4. In an observational study we impose a treatment on the subjects. 5. The entire group of individuals we want information about is called the sample.

Check the explanation

Explanation:

1. False

Voluntary response samples often over represent people with strong opinion.

2. True

Convenience samples often lead to under coverage bias.

3. True

Questionnaires with non-neutral wording are likely to have response bias.

4. False

In an observational study, we do not impose a treatment on the subjects.

5. False

The entire group of individuals we want information about iscalled the population.

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explanation: hope this

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