Now, analyze the data in Figure 3 from Clutton- Brock et al. (1999). They tested hypotheses in a wild population of meerkats; half of helper meerkats were fed 25 g of hard-boiled egg for 30 successive days (fed), and half of them were not (control). Their contributions to guarding behavior were documented during that time period. GT refers to raised guarding, or sentinel behavior. Summarize the main experimental findings shown in this figure
