As the standard deviation, ( $\sigma$)decreases,the width of the confidence interval _______________.
A)Stays the same
B)Decreases
C)Increases

Question

Quizplus · Accepted Answer

The width of the confidence interval is inversely proportional to the standard deviation. As the standard deviation decreases, the width of the confidence interval decreases, meaning that we have more confidence in our estimation of the population parameter.

As the Standard Deviation, σ\sigmaσ )Decreases,the Width of the Confidence Interval _______________

As the Standard Deviation, $\sigma$ )Decreases,the Width of the Confidence Interval _______________