probability questions 7
Answering the following including formula references. APA not needed.
- Explain what a confidence interval is, and what is the confidence level?
- Explain in what situations you can use the z statistic to construct a confidence interval for the mean of a population?
- Explain what is the test statistic used for constructing confidence interval on a proportion.
- Explain why and when t statistic is used in constructing a confidence interval for the mean of a population.
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