On a national test of "mental intensity," mis 20 and the standard deviation 6.28. Students in your class produce the following scores:
25, 26, 34, 14, 33, 29, 22, 18, 16, 13, 21, 20, 22, 21, 34, 30
Using the criterion of 0.05 and both tails of the sampling distribution, determine if your class is representative of the population.