Trees probability, p-value-2017.5.jpg

Trees probability, p-value-2017.55.jpg



for question d and e?



The mean difference between the two groups (fertilizer and control) is the -0.965.


so thus we can consider 2 explanations for the -0.965 difference

  1. The fertilizer has no effect on the height of popular trees and diff. of -0.965 was due to chance.
  2. The diff. of -0.956 arose because fertilizer does have an effect on the height of popular trees.


for d) is it 6!?
and e)6!/3003 = p-value