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
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
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