During the summer, there is an average of -5 fireflies with a standard deviation of -1.1 fireflies that visit your porch. The number of fireflies is bell-shaped. Use the Empirical Rule to find the percentage of days that the following number of fireflies visit you. Use exact answers. (a) between 1.7 and 7.2 fireflies. (b) at least 7.2 fireflies. To the best of your ability, explain how you got your answer to the this problem. One way to do so is to describe the picture you drew to figure out the answer.