During a series of 100-meter races, the times of the runners are normally distributed with a mean of 12.5 seconds and a standard deviation of 0.3 seconds. Find the percent of runners that have a time between 11.6 seconds and 12.8 seconds. Explain how you got your answer. part 2. Find the probability that a randomly selected runner has a time greater than 12.8 seconds and less than 13.4 seconds

Acompany manufactures large valves, packed in boxes. a shipment consists of 1500 valves packed in 75 boxes. each box has the outer dimensions 1.2 x 0.8 x 1.6 m and the inner dimensions 1.19 x 0.79 x 1.59 m. the boxes are loaded on a vehicle (truck + trailer). the available capacity in the vehicle combination is 140 m3. each valve has a volume of 0.06 m3. - calculate the load factor on the box level (%). - calculate the load factor on the vehicle level (%). - calculate the overall load factor (%).