For runners competing in a marathon, the mean time to run a mile is 4.2 minutes with a population standard deviation of 0.6 minutes. A news reporter is looking to include statistics for his article about fast runners. At a marathon, a random sample of 36 runners was taken and the probability that the mean time to run a mile for the sample will be less than 3.9 minutes was found. Was the probability a Left-tail, Right -tail or Interval Probability? What is the probability that the mean time to run a mile for the sample will be less than 3.9 minutes? Select the two correct answers that apply below. Use a calculator to find the probability.