Answer:
D. A sample in which the subjects themselves decide whether to be included in the study.
Explanation:
Voluntary response sample: This is a sample made up of volunteers. These samples are mostly biased. For example, a person being called in a radio show poll might have powerful opinions over a topic in any direction. In a voluntary random sample, chooses themselves by answering a common appeal. These samples are unreliable because they are bias, hence the result is usually biased.
The answer is $7.5 dollars
Answer:
b. he became friendly with nations opposed to the United States, such as cuba and iran.
Explanation:
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Mood swings and cravings but mostly mood swings
