Suppose you want to calculate a confidence interval to estimate the population mean.What happens if you want to be more than 95% confident in your results but you can't take another sample? (Assume data quality is not an issue.)
A)You need a larger confidence level than 95%.
B)You need to use a multiplier that is larger than 2 to create your margin of error.
C)You will have to live with a wider confidence interval.
D)All of the above.

Question

Quizplus · Accepted Answer

To achieve a confidence level higher than 95%, you need to increase the confidence level (A), which requires using a larger multiplier (typically derived from the z-score or t-score) than 2 (B). This results in a wider confidence interval (C) because the margin of error increases with the larger multiplier.

Suppose You Want to Calculate a Confidence Interval to Estimate