一个概率题

(1)在一个城市中有红蓝两种汽车。红色的占15%,蓝色的占85%。 (2)有一天晚上,一个目击者在这里目睹呢一场交通事故,他指证事故肇事汽车是红色的,已知在当时的条件下,他只有80%的时间可以分辨出汽车的颜色。问肇事汽车的颜色是红色的几率是几?

About liuxue

I am a Chinese university student.
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