(Answered) Question 1 why can you never really have 100 confidence of

Statistics

Question: 1. Why can you never really have 100% confidence of correctly estimating the population characteristic of interest?

2. When do you use the t distribution to develop the confidence interval estimate for the mean?

3. Why is it true that for a given sample size, n, an increase in confidence is achieved by widening (and making less precise) the confidence interval?

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