Confidence Interval Concepts: What happens to the confidence interval if you (a) increase the confidence level, (b) increase the sample size, or (c) increase the original sample statistic?

Consider the formula used for any confidence interval and the elements included in that formula. What happens to the confidence interval if you (a) increase the confidence level, (b) increase the sample size, or (c) increase the original sample statistic? Only consider one of these changes at a time. Explain your answer with words and by referencing the formula.