I construction work on multistorey building is a potentially hazardous occupation. A building contractor who is building a skyscraper at a steady pace finds that in spite of a strong emphasis on safety measures, he has been experiencing accidents among his large group of steel workers; on the average, about l accident occurs every 6 months. ()Assuming that the occurrence of a specific accident is not influenced by any previous 4.4 Stee accident, find the probability that there will be (exactly) 1 accident in the next 4 months What is the probability of at least 1 accident in the next 4 months? What is the mean number of accidents that the contractor can expect in a year? What is the standard deviation for the number of accidents during a period of 1 year? f the contractor can go through a year without an accident among his steel (2) (3) (4) I construction workers, he will qualify for a safety award. What is the probability of his receiving this award next year? If the contractor’s work is to continue at the same pace over the next 5 years, what is the probability that he will win the safety award twice during this 5-year period? (5)