Patty is interested in designing a study to test whether or not chocolate can reduce people's level of depression. From a sample of six participants, Patty first measures their level of depression, then instructs them to eat a block of chocolate each, before measuring their level of depression again. Below are the participants' depression scores:

Participant	No Chocolate	Chocolate
1	43	39
2	29	30
3	15	25
4	17	23
5	10	12
6	16	22

Compute the appropriate statistic to determine whether Patty's personal belief about chocolate was in fact true. Use this information to fill in the blanks:

Q1. ABCD showed that the level of depression reported by participants after eating chocolate was Q2. ABCD than before they ate chocolate, Q3. ABCD = Q4. ABCD, Q5. ABCD.

Based on these results, the researcher should: Q6. ABCD

Possible answers for Q1: A) A repeated measures t-test B) A single sample t-test C) An independent groups t-test D) A matched-samples t-test

Possible answers for Q2: A) significantly higher B) slightly lower C) not significantly different D) significantly lower

Possible answers for Q3: A) t(11) B) t(4) C) t(5) D) t(10)

Possible answers for Q4: A) -1.75 B) -4.29 C) -0.57 D) -0.36

Possible answers for Q5: A) p < .05 B) p = .05 C) ns D) p < .01

Possible answers for Q6: A) Reject the null hypothesis B) Retain the null hypothesis C) Reject the alternative hypothesis D) Retain the alternative hypothesis