Assume that the finishing times in a New York City 10-kilometer road race are normally distributed with a mean of 63 minutes and standard deviation of 7 minutes. Let X be a randomly selected finishing time: a. What percent of finish times was higher than 72 minutes? (Give your answers rounded to two decimal places) b. What percent of finish times was between 52 and 70 minutes? (Give your answers rounded t0 two decimal places) What is the 4Oth percentile finish time? (Round your answer to nearest tenth) d. What Is the 9Sth percentile finish time? (Round your answer t0 nearest tenth)
