GWD25-Q6
A string of 10 lightbulds is wired in such a way that if any individual lightbuld fails, the entire string fails. If for each individual lightbuld the probability of failing during time period T is 0.06, what is the probability that the string of lightbuld will fail during time period T?
A.0.06
B.(0.06)^10
C.1-(0.06)^10
D.(0.94)^10
E.1-(0.94)^10
答案給E
可是我想不透耶~
我會想是0.6
因為一個小燈泡壞 整條的燈就不亮
這樣的話 整條不亮的機率 就是0.06(一顆小燈泡壞的機率)*10顆小燈泡
這樣的想法哪裡不對呢?
(雖然沒有這個答案..)
謝謝!!!