Asked by Renee Sinclair on May 02, 2024
Verified
When a researcher moves from a 95% confidence level to a 99% confidence level, the confidence interval for the mean becomes ______.
A) wider
B) normally distributed
C) statistically significant
D) narrower
Confidence Interval
A range of values, derived from sample statistics, that is believed to contain the true population parameter with a specified level of confidence.
- Understand the relationship between confidence levels and interval widths.
Verified Answer
ZK
Zybrea KnightMay 05, 2024
Final Answer :
A
Explanation :
When a researcher moves from a 95% confidence level to a 99% confidence level, they are increasing the level of certainty that the population mean falls within the confidence interval. As a result, the confidence interval will become wider, because the researcher needs to account for a greater range of possible values within the interval to maintain the same level of confidence.
Learning Objectives
- Understand the relationship between confidence levels and interval widths.