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计算机网络中,包在 t 秒内到达的概率可近似为 P(t) = 1 - \e^(-lambda t) 。对 lambda = 0.5 /s:(a) ;(b) 概率为 0.9 时 是多少?
计算机网络中,包在 t 秒内到达的概率可近似为 P(t) = 1 - \e^(-lambda t) 。对 lambda = 0.5 /s:(a) ;(b) 概率为 0.9 时 是多少?
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