Chapter 6: Normal Distribution Due Sunday by 11:59pm Points 10 Submitting an external tool Available after Jun 20 at 12am Chapter 6: Normal Distribution Score: 6.66/10 7/10 answered . Question 9 Terri Vogel, an amateur motorcycle racer, averages 129.85 seconds per 2.5 mile lap (in a 7 lap race) with a standard deviation of 2.29 seconds . The distribution of her race times is normally distributed. We are interested in one of her randomly selected laps. (Source: log book of Terri Vogel) Let X be the number of seconds for a randomly selected lap. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X - NO b. Find the proportion of her laps that are completed between 128.58 and 129.69 seconds. c. The fastest 2% of laps are under seconds. d. The middle 80% of her laps are from seconds to seconds. Hint: Helpful videos: . Find a Probability & [+] . Finding a Value Given a Probability & [+] Hint C Question Help: Message instructor Submit