{"author_url":"https://blog.hatena.ne.jp/inamori/","description":"\u53bb\u5e741\u5e74\u9593\u306b\u6bba\u4eba\u4e8b\u4ef6\u306f1414\u4ef6\u8d77\u304d\u305f\u3068\u3044\u3046\uff08\u8b66\u5bdf\u5e81\u306e\u7d71\u8a08\u3088\u308a\uff09\u3002 \u6700\u3082\u591a\u304f\u306e\u6bba\u4eba\u4e8b\u4ef6\u304c\u8d77\u304d\u305f\u65e5\u306f\u4f55\u4ef6\u3060\u3063\u305f\u3060\u308d\u3046\u304b\u3002 \u8fd1\u4f3c m\u65e5\u3067n\u4ef6\u3068\u3057\u3066\u3001 \u3042\u308b\u65e5\u306bk\u4ef6\u8d77\u304d\u308b\u78ba\u7387\u306f\u3001 E(x=k) = nCk * (1 / m)k * (1 - 1 / m)n-k \u2252 nk / k! * (1 / m)k * e-n/m = (n / m)k / k! * e-n/m \u8981\u306f\u30dd\u30a2\u30bd\u30f3\u5206\u5e03\u3002 \u3042\u308b\u65e5\u306bk\u4ef6\u4ee5\u4e0b\u8d77\u304d\u308b\u78ba\u7387\u306f\u3001 E(x\u2266k) = (1 + (n / m) + ... + (n / m)k / k!)e-n/m \u6700\u5927\u306e\u65e5\u3067k\u4ef6\u306e\u78ba\u7387\u306f\u3001 pk = E(x\u2266k)m - E(x\u2266k-1)m \u672c\u5f53\u306f\u3053\u306e\u2026","image_url":null,"version":"1.0","provider_url":"https://hatena.blog","title":"\u6bba\u4eba\u4e8b\u4ef6\uff082\uff09\u8fd1\u4f3c","provider_name":"Hatena Blog","blog_url":"https://inamori.hateblo.jp/","width":"100%","height":"190","type":"rich","categories":["\u6570\u5b66","\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0"],"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Finamori.hateblo.jp%2Fentry%2F20051206%2Fp1\" title=\"\u6bba\u4eba\u4e8b\u4ef6\uff082\uff09\u8fd1\u4f3c - inamori\u2019s diary\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","url":"https://inamori.hateblo.jp/entry/20051206/p1","blog_title":"inamori\u2019s diary","author_name":"inamori","published":"2005-12-06 00:00:00"}