Two samples of rats are timed for their maze running time. One grou is taking a drug and the other is not. The times are given in the following table: Rats with drug Rats w/o drug 15 11 12 13 13 12 6 10 11 11 Determine whether the use of the test drug results in a different maz running time. Use the .05 level of significance.

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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PROBLEM :
Two samples of rats are timed for their maze running time. One group
is taking a drug and the other is not. The times are given in the
following table:
Rats with drug
Rats w/o drug
15
11
12
13
13
12
10
11
11
Determine whether the use of the test drug results in a different maze
running time. Use the .05 level of significance.
Question:
What type of test should be used?
One-tailed test with negative critical value
Either two-tailed or one-tailed
Two-tailed test
O One-tailed test with positive critical value
Transcribed Image Text:PROBLEM : Two samples of rats are timed for their maze running time. One group is taking a drug and the other is not. The times are given in the following table: Rats with drug Rats w/o drug 15 11 12 13 13 12 10 11 11 Determine whether the use of the test drug results in a different maze running time. Use the .05 level of significance. Question: What type of test should be used? One-tailed test with negative critical value Either two-tailed or one-tailed Two-tailed test O One-tailed test with positive critical value
PROBLEM :
Two samples of rats are timed for their maze running time. One group
is taking a drug and the other is not. The times are given in the
following table:
Rats with drug
Rats w/o drug
15
11
12
13
13
9.
12
6
10
11
11
Determine whether the use of the test drug results in a different maze
running time. Use the .05 level of significance.
Question:
What statistical test should be used to answer the problem?
regression
z-test
O t-test
ANOVA
Transcribed Image Text:PROBLEM : Two samples of rats are timed for their maze running time. One group is taking a drug and the other is not. The times are given in the following table: Rats with drug Rats w/o drug 15 11 12 13 13 9. 12 6 10 11 11 Determine whether the use of the test drug results in a different maze running time. Use the .05 level of significance. Question: What statistical test should be used to answer the problem? regression z-test O t-test ANOVA
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