diff --git a/题库0.3/Problems.json b/题库0.3/Problems.json
index 4aee7115..38464f93 100644
--- a/题库0.3/Problems.json
+++ b/题库0.3/Problems.json
@@ -535930,7 +535930,7 @@
             "第九单元"
         ],
         "genre": "解答题",
-        "ans": "认为乙种疗法的效果比甲种疗法更好($\\chi^2=4.888$, $P(\\text{治愈}|\\text{使用乙疗法})>P(\\text{治愈}|\\text{使用甲疗法})$)",
+        "ans": "认为乙种疗法的效果比甲种疗法更好($\\chi^2=4.881$, $P(\\text{治愈}|\\text{使用乙疗法})>P(\\text{治愈}|\\text{使用甲疗法})$)",
         "solution": "",
         "duration": -1,
         "usages": [