Concept explainers
To draw: The conclusion about the 99% confidence interval in comparison of 95% confidence interval.
Answer to Problem 23E
The correct option is (b).
Explanation of Solution
Given:
There are two confidence intervals 95% and 99%.
The width of the confidence interval is positively related to the confidence level and higher confidence level provides the higher degree of precision which involves the lower risk of being incorrect.
Here, it could be said that for the 99% confidence level, the confidence interval would be wider and there would be lower risk of being incorrect.
Thus, the correct option is (b).
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