Mini wants to know if the number of words on a page in her planetary science book is generally more than the number of words on a page in her math book she takes a random sample of 25 pages in each book then calculate the mean median and mean absolute deviation for the 25 samples of each book she claims that because the mean number of words on each page interplanetary science book is greater than the mean number of words on each page in the math book the planetary science book has more words per page based on the data is this a valid inference