A standard race is the 100 m sprint, with Usain Bolt holding the record at 9.58 seconds. Suppose a researcher asks 105 men to run 100 m and finds a mean of 24 and a sample standard deviation of 5....

A standard race is the 100 m sprint, with Usain Bolt holding the record at 9.58 seconds. Suppose a researcher asks 105 men to run 100 m and finds a mean of 24 and a sample standard deviation of 5. What is a 95% confidence interval for the average running time and would you expect Usain's time to be in the interval?

a. The interval 23.043 to 24.956 and Usain's time is a rare event - a freak occurrence that happened by chance

b. The interval is 23.043 to 24.956 but Usain's time is unrelated to this confídence interval

c. The interval is 14.2 to 33.8 and Usain's time is a non-random draw since professional runners like Ussain are chosen for their low times.

d.  The interval is 23.043 to 24.956 and Usain's time is a non-random draw since professional runners like Usair are chosen for their low times