A psychologist is interested inwhether physical activity affects mood status.18 college students from the freshmen class are randomly sampled for an experiment and randomly assigned into 2 conditions.In condition 1, 9 students are given a test which measures mood status.The higher the score, the more positive mood.In condition 2, 9 students are given the same the test after they complete 30-minute-work-out.The following scores are obtained.

Condition 1 (no work-out)

5 4 4 6 2 2 3 4 6

Condition 2 (work-out)

10 10 5 5 9 5 4 7 3

What is the appropriate statistics test for evaluating your hypothesis?

Assume you are evaluating H0 with the t test.The degree of freedom (df) for determining tcrit equal -

Assume you are using t test of hypothesis testing for this experiment, the t critical value using = .05, 2 tail, would be-

Assume the obtained value of the appropriate statistic is t obt = -2.408, using = 0.05, 2 tail, what do you conclude? -