Now use the estimation approach to analyse the extent to which the intervention might be useful. Calculate SE for the sample, then the 95% MoE, and then the 95% Cl. Interpret your result. Compare and contrast the two approaches. Which do you feel would be more informative for others who are considering implementing this intervention? Why? For thought: How well does this study t the assumptions for calculating a Cl? Is it fair for the professor to consider any difference from the national norm to be caused by the intervention? Would it matter at what university the professor worked at