Bella’s aims to construct a confidence interval for the mean of a normal population with known standard deviation. List three factors that could help her in reducing the size of the margin error. Then, she collects a random sample of size from a population and from the data collected she compute a 95% confidence interval for the mean of the population. Based on the same dataset, state one factor that could produce a new confidence interval with a larger width (Hint: Larger margin of error).
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Expert's answer
2019-08-13T13:27:19-0400
Three factors that could help her in reducing the size of the margin error:
Increasing the sample size.
Lowering the confidence level.
Using a one-sided confidence interval
The factor that could produce a new confidence interval with a larger width - increasing the confidence
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