The reviews editor for a certain scientific journal decides whether the review for any particular book should be short (1–2 pages), medium (3–4 pages), or long (5–6 pages). data on recent reviews indicates that 60% of them are short, 20% are medium, and the other 20% are long. reviews are submitted in either word or latex. for short reviews, 60% are in word, whereas 50% of medium reviews are in word and 20% of long reviews are in word. suppose a recent review is randomly selected.
