Answered: *MUST SHOW ALL STEPS OF HYPOTHESIS…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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*MUST SHOW ALL STEPS OF HYPOTHESIS TEST*

Problem 12 (part a and c). Many animals, including humans, tend to avoid direct eye contact and even patterns that look like eyes. Some insects, including moths, have evolved eye-spot patterns on their wings to help ward off predators. Scaife (1976) reports a study examining how eye-spot patterns affect the behavior of birds. In the study, the birds were tested in a box with two chambers and were free to move from one chamber to another. In one chamber, two large eye-spots were painted on one wall. The other chamber had plain walls. The researcher recorded the amount of time each bird spent in the plain chamber during a 60-minute session. Suppose the study produced a mean of M =37 minutes in the plain chamber with SS = 288 for a sample of n = 9 birds. (Note: If the eyespots have no effect, then the birds should spend an average

of μ=30 minutes in each chamber.)

Is this sample sufficient to conclude that the eye-spots have a significant influence on the birds’ behavior? Use a two-tailed test with α=.05.

Construct the 95% confidence interval to estimate the mean amount of time spent on the plain side for the population of birds.

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