You have constructed a 95% confidence interval to estimate the mean number of people downloading music files from the internet using a sample of 150 people.Which of the following statements are true?
I.A 95% Confidence interval will be wider than a 99% confidence interval.
II.Sampling a smaller number of people will increase the margin of error.
III.Changing the sample size will change the value of 
.
Definitions:
Representative Sample
A subset of a population that accurately reflects the members of the entire population.
Laboratory Environment
A controlled setting designed for scientific research, experiments, and measurement, often distinct from real-world conditions.
Meta-Analysis
A statistical analysis that combines the results of multiple scientific studies to arrive at a conclusion about a body of research.
Descriptive Technique
A research method used for observing and describing behavior in a natural setting without influencing it.
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