Book Review. ‘www.goodreads.com is a website where people can leave their review about book and rate them. The books are rated from 5 stars (5*), indicating a very good book, to 1 star (1*), which means not worth reading, as per the reviews by members. The following table gives the number of pages of a random sample of books listed in the site.

1* 2* 3* 4* 5*

382 560 384 325 360 391 343 458 390 298 335 512 409 304 272 368 329 309 240 368 400 391 374 306 320 372 367 459 169 326 At the 1% significance level, do the data provide sufficient evidence to conclude that a difference exists in mean number of pages among books in the five rating groups? (Note: T1 = 2248, T2 = 2502, T3 =

2393, T4 = 1734, T5 = 1944, and x 2 i = 4071007.)