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 11 thousand miles. Complete parts (a) through (d) below. Question content area bottom Part 1 a. What proportion of trucks can be expected to travel between 67and 80 thousand miles in a year? The proportion of trucks that can be expected to travel between 67 and 80 thousand miles in a year is enter your response here. (Round to four decimal places as needed.) Part 2 b. What percentage of trucks can be expected to travel either less than 55 or more than 95 thousand miles in a year? The percentage of trucks that can be expected to travel either less than 55 or more than 95 thousand miles in a year is enter your response here%. (Round to two decimal places as needed.) Part 3 c. How many miles will be traveled by at least 65% of the trucks? The number of miles that will be traveled by at least 65% of the trucks is enter your response here miles. (Round to the nearest mile as needed.)