riday 1 May 2020

1. We are interested to know whether test animals respond to temperature by moving toward a favoured temperature. Animals were placed in a temperature gradient marked in units from zero (the starting point) in the middle of the gradient to positive at the warm end and negative at the cold end. The mean position along the gradient was found to be -1.352 units, the standard deviation was 12.267 units and n=500 individuals. Is there a significant tendency to aggregate at either the cold or warm end of the gradient? Start by setting up a null hypothesis in terms of the mean position along the gradient = 0.