表 指輪の装着と恋人の有無(度数)
| 恋人あり | 恋人なし | |
|---|---|---|
| 指輪あり | 25 | 11 |
| 指輪なし | 10 | 16 |
「指輪の装着と恋人の有無には関係がない」という帰無仮説を有意水準5％でカイ二乗検定で判定せよ。
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