Question

A linguist at a large university was studying the word length of papers submitted by students en

humanities programs. From a random sample of 25 papers, the linguist counted the number of words
used in each paper. The 95 percent confidence interval was calculated to be (20,995, 22,905).
Assuming all conditions for inference are met, which of the following is a correct interpretation of the
interval?

Answer 1

We are 95 percent confident that the mean word length for all papers submitted by students in humanities programs is between 20,995 words and 22,905 words

Explanation:

The confidence interval is used to predict the mean for the entire humanities program, not just the sample.