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Luise runs a group intervention program for social anxiety, consisting of 7 group members. She measured...

Luise runs a group intervention program for social anxiety, consisting of 7 group members. She measured the anxiety score before her group intervention, which was 6.2, and just got the anxiety score after finishing her program, which was 5.5. SE of the score differences is 1.2. Is her group intervention program effective?

  1. Indicate the null and research hypothesis.
  2. What test do you do to test the null hypothesis above, among independent-sample t-test, paired-sample t-test, or one-sample t-test?
  3. What is the t-statistics?
  4. What is the d.f. for the test?
  5. Do you reject the null hypothesis?
  6. So, was the anxiety score before and after the intervention significantly different?
Math   Statistics-And-Probability   
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