A trucking company determined that the distance traveled per truck per year is normally distributed, with a mean of 80 thousand miles and a standard deviation of 12 thousand miles. Complete parts (a) through (c) below. a. What proportion of trucks can be expected to travel between 64 and 80 thousand miles in a year? 8goto s! Jeeke u! sepu puesnoyl 0 pus 19 weemjeq jexen of pappedxe eq uco jay; sxong Jo uoquodold a41 (Round to four decimal places as needed.) b. What percentage of trucks can be expected to travel either less than 60 or more than 95 thousand miles in a year? The percentage of trucks that can be expected to travel either less than 60 or more than 95 thousand miles in a year is 15 31 % (Round to two decimal places as needed.) c. How many miles will be traveled by at least 70% of the trucks? The amount of miles that will be traveled by at least 70% of the trucks is | miles. (Round to the nearest mile as needed.)