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.

Question

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.

Quizplus · Accepted Answer

The Answer of 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.

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