Bill concludes that he is 95% confident in his conclusion that the typical university student studies between 2 and 4 hours a day. This is an example of a(n)

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Bill's conclusion of being 95% confident that the typical university student studies between 2 and 4 hours a day is an example of an interval estimate. It gives a range of values rather than a single point estimate, and the confidence level indicates how confident Bill is in this interval encompassing the true population value.

Bill Concludes That He Is 95% Confident in His Conclusion