Problem
c. Choose the correct answer below. A. Quadrupling the sample size while holding the confidence coefficient fixed does not affect the width of the confidence interval B. Quadrupling the sample size while holding the confidence coefficient fixed increases the width of the confidence interval by a factor of 4 C. Quadrupling the sample size while holding the confidence coefficient fixed increases the width of the confidence interval by a factor of 2 D. Quadrupling the sample size while holding the confidence coefficient fixed decreases the width of the confidence interval by a factor of 2 E. Quadrupling the sample size while holding the confidence coefficient fixed decreases the width of the confidence interval by a factor of 4 .
Solution
Step 1 ：Choose the correct answer below.
Step 2 ：Quadrupling the sample size while holding the confidence coefficient fixed decreases the width of the confidence interval by a factor of 2.
Step 3 ：Final Answer: \(\boxed{\text{D. Quadrupling the sample size while holding the confidence coefficient fixed decreases the width of the confidence interval by a factor of 2}}\)
