A swarm of bees is released from a certain point. The proportion of the swarm located at least 2 meters from the point of release after 1 hour is a random variable that is exponentially distributed with a = 2. (a) Find the expected proportion under the given conditions. (Enter a decimal) (b) Find the probability that fewer than 20% of the bees are located at least 2 meters from the release point after 1 hour. (Round to four decimal places as needed)