Consider an Urban Ecologist Who Is Interested in Whether the Presence

Multiple Choice

Consider an urban ecologist who is interested in whether the presence of high-voltage power lines influences the number of eggs laid by birds nearby. She plans to conduct a two-sample t-test and will assume that the population variances are equal. Her data are as follows:
Near (group 1) : mean = 6.1, SD = 0.35, n = 12
Far (group 2) : mean = 5.8, SD = 0.30, n = 9
What is the conclusion of the t-test?

A) Fail to reject the null hypothesis, the mean number of eggs do not seem to differ in the two types of locations.
B) Fail to reject the null hypothesis, the mean number of eggs seem to differ in the two types of locations.
C) Reject the null hypothesis, the mean number of eggs do not seem to differ in the two types of locations.
D) Reject the null hypothesis, the mean number of eggs seem to differ in the two types of locations.