Questions Below Are Based on the Following: (This Is Similar

question 78

Short Answer

Questions below are based on the following: (This is similar to an item in the text at the back of chapter 12 but WITH A DIFFERENT DATA SET). A researcher is interested in whether a certain amphetamine drug will affect the retention of learned behavior among rats as a function of how much time is allowed to elapse between the training and the retention test. Four groups, ten subjects in each group, were randomly selected from a colony of Sprague-Dawley rats. All the rats were given the same amount of training on a simple maze. Groups A and C were given the amphetamine, whereas Groups B and D were given a placebo. Groups A and B were tested for retention immediately following the training, whereas Groups C and D were tested 4 hours later. The retention measure consisted of a scaled score based on how many correct responses the rats would exhibit while running the maze, the higher the score the higher the retention $$\begin{array}{l}\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\text { FACTOR A }\\\begin{array} { l c c } & \begin{array} { c c } \text { Amphetamine } \\\text { Group A }\end{array} & \begin{array} { c } \text { Placebo } \\\text { Group B }\end{array} \\& 15 & 13 \\& 9 & 9 \\& 9 & 12 \\\text { Immediate } & 11 & 7 \\\text { Test } & 10 & 7 \\& 6 & 8 \\& 10 & 10 \\& 12 & 9 \\& 14 & 5 \\& 7 & 11 \\& \text { FACTOR B } & \\& \text { Group C } & \text { Group D } \\& 1 & 8 \\& 5 & 6 \\\text { Delayed } & 2 & 9 \\\text { Test } & 4 & 4 \\& 5 & 4 \\& 6 & 5 \\& 5 & 6 \\& 2 & 6 \\& 6 & 6 \\& 1 & 7\end{array}\end{array}$$
-Is the interaction significant?

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Definitions:

Mutually Exclusive

Refers to a situation where the selection of one alternative prevents the selection of any other alternative.

Required Rate

The minimum return an investor expects to achieve on an investment, taking into account its risk.

Average Accounting Rate of Return

A financial ratio indicating the expected return on an investment, calculated by dividing the average profit by the initial investment cost.

Straight-Line Depreciation

A technique for spreading the expense of an asset uniformly over its expected lifespan.