Complete the statement by filling in the blanks. When constructing a confidence interval, if the level of confidence increases, the margin of error must _____ and the confidence interval will be .
A)Decrease, narrower.
B)Decrease, wider.
C)Increase; narrower.
D)Increase; wider.

Question

Quizplus · Accepted Answer

When the level of confidence increases, the margin of error also increases because a higher confidence level means we want to be more certain about our estimates, which requires a wider interval to capture the true parameter with that higher certainty.

Complete the Statement by Filling in the Blanks