We Have Calculated a Confidence Interval Based on a Sample $n = 180 .$

question 16

Multiple Choice

We have calculated a confidence interval based on a sample of $n = 180 .$ . Now we want to get a better
Estimate with a margin of error only one third as large. We need a new sample with n at least…

• A) 312
• B) 1620
• C) 60
• D) 540
• E) 20