For the Following Question(s): a Researcher Is Interested in Whether

question 65

Multiple Choice

For the following question(s) : A researcher is interested in whether the color of an animal's surroundings affects learning rate. She tests 16 rats in a box with colorful wallpaper. Assume that it is known that the average rat can learn to run this particular maze (in a box without any special coloring) in 25 trials, with a variance of 64; the distribution is normal. The mean number of trials to learn the maze for the group 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 is 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 is faster than the population of rats tested under ordinary circumstances.
• C)The rate of learning for the population of rats tested with colorful wallpaper is 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 is faster than the population of rats tested under ordinary circumstances.

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