The times of 8 runners in a randomly selected heat of the 100 m sprint in the Olympic Games had a mean time of 9.84 s and a standard deviation of 0.08 s. Calculate (correct to two decimal places) 99.9% confidence limits for the mean time of all the 100 m runners at the Olympic Games. A 9.65s and 10.13s B 9.65s and 9.93s C 9.75s and 9.93s D 9.73s and 9.95s
