Question 1 1 Point A group of athletes all run a 100m sprint. The average of their times is 12.3s, with a standard deviation of 1.1s. If an athlete is randomly selected from the group, what is the probability that their time will be greater than 10.9s? A 0.000029 B 0.1 C 0.9 D 0.25 Question 2 1 Point A group of athletes all run a 100m sprint. The average of their times is 12.3s, with a standard deviation of 1.1s. Someone then randomly and repeatedly samples 8 athletes from the group and records the average of their sprint times for each sample. The standard deviation of the distribution of sample means will then be A None of these B 0.39 C 0.14 D 1.1 Question 3 1 Point The central limit theorem tells us that as sample size increases the sampling distribution of the mean becomes A normally distributed with a larger range of scores B normally distributed with a smaller range of scores C shaped like the population distribution D less normally distributed but more leptokurtic