11% of all books sold are romance genre. If the bookstore sells 316 books on a given day, what is the probabilitythat fewer than 40 are romances, at least 25 are romances, between 25 and 40 are romances? What is n?p?q? Are both np and nq larger than 5? Why is this important to consider?
Normal approximation to the bionomial distribution and continuity correction are discussed. The important of np and nq larger than 5 is determined.