Question 4 (3 points) 4. Dave owns his own business, delivering goods to people and businesses. On average, he drives 600 km per week, with a standard deviation of 50 km. a. Sketch and label a normal distribution curve that represents this scenario. (1 point) b. What is the probability that he will drive between 650 and 800 km in a given week? Use the calculator statistics functions and clearly document your calculator entries. Round your answer to the nearest hundredth. (1 point) c. What is the probability that he will drive less than 500 km in a given week? Use the calculator statistics functions and clearly document your calculator entries. Round your answer to the nearest hundredth. (1 point)