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闫小琴 · 2024年08月26日

NO.2020033001000002

公式显示不正确 这个公式不应该用-U+ZV吗
1 个答案

pzqa39 · 2024年08月28日

嗨,从没放弃的小努力你好:


用-U+ZV也可以

VAR=-mean+1.645(分为点)*σ=-30+1.65*10=-13.5

那就理解成有95%的概率至多亏-13.5,对应的就是盈利至少为13.5.

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虽然现在很辛苦,但努力过的感觉真的很好,加油!

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