An Experimental Psychologist Is Interested in Whether the Color of an Animal's

question 60

Multiple Choice

An experimental psychologist is interested in whether the color of an animal's surroundings affects learning rate. He tests 16 rats in a box with colorful wallpaper. The average rat (of this strain) can learn to run this type of maze in a box without any special coloring in an average of 25 trials, with a variance of 64, and a normal distribution. The mean number of trials to learn the maze, for the rats tested with the colorful wallpaper, is 11.
-What is the null hypothesis?

• A)The rate of learning for the sample of rats tested with colorful wallpaper will be no different than the population of rats tested under ordinary circumstances.
• B)The rate of learning for the sample of rats tested with colorful wallpaper will be faster than the population of rats tested under ordinary circumstances.
• C)The rate of learning for the population of rats tested with colorful wallpaper will be no different than the population of rats tested under ordinary circumstances.
• D)The rate of learning for the population of rats tested with colorful wallpaper will be faster than the population of rats tested under ordinary circumstances.

---

Definitions:

Neuropeptide

One of a group of peptides produced in neural tissue that function as signaling molecules; many are neurotransmitters.

Prostaglandin

A collection of lipid molecules that exhibit varying hormone-like functions across animal species.

Hormones

Hormones are chemical messengers produced by glands in the body that regulate physiological processes by signaling to distant organs and tissues.

Chemical Messengers

Molecules that transmit signals from one cell to another, often hormones or neurotransmitters.