Neuroscience researchers examined the impact of environment on rat development. Rats were randomly assigned to be raised in one of the four following test conditions: Impoverished (wire mesh cage – housed alone), standard (cage with other rats), enriched (cage with other rats and toys), super enriched (cage with rats and toys changes on a periodic basis). After two months, the rats were tested on a variety of learning measures 4. (including the number of trials to learn a maze to a three perfect trial criteria), and several neurological measure (overall cortical weight, degree of dendritic branching, etc.). The data for the maze task is below. Compute the appropriate test for the data provided in Table 3. Compute the appropriate test using 5% significant level. TABLE 3 Impoverished Standard Enriched Super Enriched 22 17 12 8 19 21 14 7 15 15 11 10 24 12 9 9 18 19 15 12 a. What is your computed answer? b. What would be the null hypothesis in this study? c. What would be the alternate hypothesis?
Neuroscience researchers examined the impact of environment on rat development. Rats
were randomly assigned to be raised in one of the four following test conditions:
Impoverished (wire mesh cage – housed alone), standard (cage with other rats), enriched
(cage with other rats and toys), super enriched (cage with rats and toys changes on a
periodic basis). After two months, the rats were tested on a variety of learning measures
4. (including the number of trials to learn a maze to a three perfect trial criteria), and several
neurological measure (overall cortical weight, degree of dendritic branching, etc.). The
data for the maze task is below. Compute the appropriate test for the data provided in
Table 3. Compute the appropriate test using 5% significant level.
TABLE 3
Impoverished Standard Enriched Super Enriched
22 17 12 8
19 21 14 7
15 15 11 10
24 12 9 9
18 19 15 12
a. What is your computed answer?
b. What would be the null hypothesis in this study?
c. What would be the alternate hypothesis?
d. What is your Fcrit?
e. Are there any significant differences between the four testing conditions?
f. Interpret your answer
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