Question

Select the true statement(s) about studies and random samples.

____A simple random sample is representative of the entire population of interest.

_____In an observational study, the researchers record the response for a specific variable for each individual or object.

_____The number of simple random samples is always infinite.

____In an experimental study, the researchers investigate the effects of certain conditions on at least three different groups.

_____A simple random sample is a systematic pattern for selecting objects from a population.

2. The researchers conducted an experiment that is well‑designed and well‑implemented. The data were gathered perfectly with no errors. Suppose they observed an experimental outcome that is very rare.

What thing(s) could have happened?

______One or more of the experimental subjects was lying.

______The researchers faked the data.

______The researchers could have gotten very lucky (or very unlucky).

______The claim about the population is actually false.

Answer 1

true statements about studies and random samples are

____A simple random sample is representative of the entire population of interest.

_____In an observational study, the researchers record the response for a specific variable for each individual or object.

_____The number of simple random samples is always infinite.

2.The researchers conducted an experiment that is well‑designed and well‑implemented. The data were gathered perfectly with no errors. Suppose they observed an experimental outcome that is very rare.things could be happened

______The researchers could have gotten very lucky (or very unlucky).

______The claim about the population is actually false.