1. To investigate the ecological impact of parasite infections, scientists measured the distance that infected western fence lizards, Scelopons occidentalis, ran in two minutes against a control group of uninfected lizards. The results are summarized below:
Infected lizards:
n= 18
mean= 24.17 m
s= 9.02 m
Uninfected lizards:
n= 25
mean= 30.14 m
s= 8.30 m
a. Assuming that both groups are normally distributed and have equal variances, did the infected lizards run a smaller mean distance than the uninfected lizards? Show your work and include all steps for full credit. Note: Pooled SE = 2.92 m