How can one determine whether the confidence interval is good or not?

Question

I am doing a statistics problem and I have a question regarding the confidence interval. When exactly do we say that the confidence interval is good and what does it mean by that?? for example, I am doing this binomial distribution problem where I need to find the 95% confidence interval. I did that. but how can I determine whether it is good or not. if you need additional info, pls tell me.

@ James, that's what I want to know... when is the interval considered large??? also does the interval has anything to do with std dev?? for example, the std dev is large... like 24 or something... so now watever interval you get, does the std dev has a role to play about the interval being good or bad??? please elaborate...

Answer 1

This is a rather subjective question because it depends on the context of the question; for example, if the 95% interval is too large to be very useful for your situation then it would seem appropriate to use the descriptor "bad".