Changes in the size of the Confidence Interval:Suppose you are constructing confidence intervals about a mean or proportion. Answer the following questions about the size (width) of the confidence interval when the following changes are made.

(a) If the confidence levelincreases, then which of the following is true?

1) The confidence interval gets smaller.

2) The confidence interval does not change size.

3) The confidence interval gets larger.

(b) If the sample sizedecreaseswhile the confidence level and sample statistics remain constant, then which of the following is true?

1) The confidence interval gets smaller.

2) The confidence interval does not change size.

3) The confidence interval gets larger.