Work in cells: O=10, E=15; (10−15)²/15 contributes
- A
1.0
- B
5.0
- Ccheck_circle
1.67
- D
25.0
Explanation
25/15 ≈ 1.667.
Carrying Out a Chi-Square Test for Goodness of Fit
AP Statistics· difficulty 4/5
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