1) The mean life of a tire is 30,000 km. The standard deviation is 2,000 km. a) 68% of all tires will have a life between? c) What percent of the tires will have a life that exceeds 26,000 km? b) 95% of all tires will have a life between? d) If a company purchased 2,000 tires, how many tires would you expect to last more than 28,000 km?