I recently competed in a 5K race that had a mean finish time of = 24.3 minutes and standard deviation = 4.7 minutes.The finish times were normally distributed.

a)What is the variable in this example?Classify this variable as qualitative or quantitative, by type (nominal/ordinal/interval/ratio), and as continuous or discrete.

b)Using the empirical rule, find the range of times in which 95% of the runners finished the race.