on a random day during the year, what is the probability there will be 4 admissions to the emergency ward, assuming there are 350 normal-pollution days and 15 high-pollution days? (round your answer to four decimal places.) (d) the hospital is planning a new emergency-room facility. it wants enough beds in the emergency ward so that for on a random day during the year at least 95% of days it will not need to turn anyone away, assuming there are 350 normal-pollution days and 15 high-pollution days. what is the smallest number of beds it should have to satisfy this criterion?