Classroom assessment: Central limit theorem. In the Ryan (2006) study described in Question 28, participants selected 120 samples of size 3 from a population of 5 scores (0, 0, 0, 3, and 6) using theoretical sampling. Based on this example, 1. What is the shape of the population distribution? Hint: Graph the frequency distribution of the population of scores: 0, 0, 0, 3, and 6.

2. What is the shape of the sampling distribution of sample means? Hint: You do not need calculations to answer this question.