A trucking company determined that the distance traveled per truck per year is normally distributed, with a mean of 60 thousand miles and a standard deviation of 12 thousandmiles. Complete parts (a) through (d) below. a. What proportion of trucks can be expected to travel between 43 and 60 thousand miles ina year? The proportion of trucks that can be expected to travel between 43 and 60 thousand miles in a year is (Round to four decimal places as needed.)

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