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...

Extracted 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


Extracted 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