A matched-pairs study has 14 pairs of subjects.
The degrees of freedom for the matched-pairs t are:
- A
28
- B
14
- Ccheck_circle
13
- D
27
Explanation
df = n_d - 1 = 14 - 1 = 13, where n_d is the number of pairs.
Constructing a Confidence Interval for a Population Mean
AP Statistics· difficulty 3/5
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