At at peak of recent COVID-19 surge, a regional hospital's ER room receives in average 5 COVID-19 patients every day. Let variable Y represents the number of COVID-19 patientes visit to the ER per day. Use the information given above to to answer the following questions. 1. What is the intensity parameter ()) for problem stated above? 2. Determine the mean and standard deviation of the variable Y. 3. Determine the probability that that exactly 3 COVID-19 patients visit the ER in a given day