In a Study of Captive Nectar-Feeding Bats (Leptonycteris Sanborni), Data

question 12

Essay

In a study of captive nectar-feeding bats (Leptonycteris sanborni), data were gatheredon nectar intake over a five-minute flight period. The bats were randomly selectedfor the study. Investigators are interested in the differences in weight gain for malesand females. The bats were weighed before and after feeding, and the relative weightgain was calculated for each animal using the formula: Consider constructing a 95% confidence interval for the population difference in meanweight gains for male and female bats.a) Using a graphic display of your choice, show that it is appropriate to use the tprocedure to construct a confidence interval.b) Calculate and interpret the 95% confidence interval in the context of the problem.c) Do you feel these results can be generalized to non-captive bats?
Why or whynot?

---

Definitions:

Germinal Center

An area inside lymph nodes where mature B cells grow, evolve, and alter their antibody genes while responding to an immune challenge.

Afferent Vessels

Blood vessels that carry blood toward a particular organ or tissue, often referring to the vessels entering an organ.

Efferent Vessels

Blood vessels or lymphatic vessels that carry fluid away from an organ or tissue, as opposed to afferent vessels that bring fluid to it.

Lymphatic Vessels

A network of conduits through which lymph, containing immune cells and waste, is transported.