In a packet of stickers there are 3 small stars, 6 big stars, and 10 big rockets. But, there are no small rockets. Kevin is going to choose one of these stickers from the packet at random to put on his artwork. What is the probability that the sticker Kevin chooses is small or is a rocket? Do not round intermediate computations, and round your answer to the nearest hundredth. (If necessary, consult a list of formulas.)