BFW Publishers How is the hatching of water python eggs influenced by the temperature of the snake s nest Researchers randomly assigned newly laid eggs to one of three water temperatures hot neutral or cold Hot duplicates the extra warmth provided by the mother python and cold duplicates the absence of the mother The two way table summarizes the data on whether or not the eggs hatched Of the eggs that hatched what proportion were randomly assigned to hot water Round to 3 decimal places Hatched Cold Yes 16 No 11 Total 27 Water Temperature Neutral Hot Total 38 75 129 18 29 58 56 104 187 Proportion R Shine et al The influence of nest temperatures and maternal brooding on hatchling phenotypes in water pythons Ecology 78 1997 pp 1713 1721