Pages were randomly selected from one book each from authors A, B, and C. The accompanying table shows the ease-of-reading scores for those pages. Use a

0.05

significance level to test the claim that pages from books by those three authors have the same mean ease-of-reading score. Given that higher scores correspond to text that is easier to read, which author appears to be different, and how is that author different?

A B C 58.5 85.1 69.3 73.5 84.9 64.8 73.2 79.5 71.9 64.7 82.2 71.6 72.1 80.7 68.5 89.6 84.8 51.5 43.1 79.2 72.6 76.5 70.5 74.7 76.5 78.8 52.7 78.1 86.4 58.2 69.2 74.4 65.3 72.9 83.9 73.9