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

Question

Quizplus · Accepted Answer

When the level of confidence decreases, the z* or t* value (which is used in calculating the margin of error) decreases, leading to a smaller margin of error and thus a narrower confidence interval.

Complete the Statement by Filling in the Blank