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A Scientist Randomly Divided a Group of 100 Lab Rats

question 24

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A scientist randomly divided a group of 100 lab rats into two groups of 50. One group was fed regular rat chow while the other was fed the same amount of rat chow with added DDT. Both groups were housed in the same room with the same environmental conditions. At the end of the experiment, rats were weighed and the mean difference calculated.
-Refer to the accompanying narrative. Which dependent variable was measured?


Definitions:

Cochlear Implants

Electronic medical devices that replace the function of the damaged inner ear by providing sound signals directly to the brain.

Auditory Nerve

The axon bundle that transmits neural impulses from the organ of Corti to the brain.

Cones and Rods

Specialized cells in the retina of the eye responsible for detecting light and color (cones) and low-light vision (rods).

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