SUCUL IUR. 2. The time that it takes to complete a marathon is modelled by a normal distribution with a mean of 4.547 hours and a standard deviation of 0.634 hours. a) What is the probability that a randomly selected runner will complete the marathon in less than 3 hours and a half? (4 marks)

Nantle Urading W Student ID#: b) What is the median finish time in this marathon? (4 mark

Student ID#: 000 people participate in 2020 Marathon in Ottawa, then what would be the longest finish time for the top 50 runners? (4 marks) e) ir 20,000 peo