問題詳情

(iii) A light, bulb has been used for one year, whal; is the prohabilil;y that I;lie light; bulb can be used forantlier year,ami wliai, is he expectation of Ihe life time of this light, bulb.

參考答案

答案:A
難度:非常簡單0.909926
統計:A(990),B(33),C(10),D(14),E(0)

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