As Part of the Iguana Risk Assessment Experiment Described in the Previous

question 41

Essay

As part of the iguana risk assessment experiment described in the previous problem, investigators replicated the experiment with one difference--the investigators approached the iguanas at a tangent, passing by the iguana with a closest distance being 2 meters. Summary statistics for the approach distances for the two treatments, Eye Contact and No Eye Contact, are given in the table below: An initial analysis of the data revealed that it was reasonable to assume the population approach distances at first run were both approximately normal.
a) Construct a 95% confidence interval for the difference in approach distances for the eye contact and no eye contact treatments.
b) Do the data indicate that for a tangential approach, the population means differ? Justify your answer statistically.

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Definitions:

Linear Model

A mathematical approach used in statistics to model the relationship between a scalar response and one or more explanatory variables.

Model

An abstract representation of a system or process, used to simulate and predict behavior or outcomes.

Applicable

Relevant or appropriate in a particular situation, condition, or context.

World Population

The total number of humans currently living on Earth, estimated through censuses and statistical models.