Quiz naviga 6 Let X denote the distance (in km) between cracks in a major highway. Suppose that, for highways in Alberta, X has an exponential distribution with parameter A = 0.01395. (Round your answers to 4 decimal places, if needed.) I I [ : 'I H of (a) What is the probability that the distance is at most 100 km? I I Finish attem What is the probability that the distance is at most 200 km? What is the probability that the distance is between 100 km and 200 km? (b) What is the probability that distance exceeds the mean distance by more than 2 standard deviations? (c) What are the expected value and standard deviation of distance? Expected value = Standard deviation = (d) What is the median distance