ABC Trucking Company realized that on an annual basis the distance traveled is normally distributed with a mean of 50,000 miles and a standard deviation of 12,000. Using a normal distribution:. 1. What is the probability that a randomly selected truck travels between 34,000 and 50,000 miles?
2. What is the probability that a randomly selected truck travels between 34,000 and 38,000 miles?
3. How many miles will be traveled by at least 80% of the trucks? [Hint: Think about the left side of the normal curve.]