[問題] 一題統計
what is the probability of obtaining exactly one defective tire form a sample
of 20 if 8% of the tires manufactured at a particular plant are defective?
a) 0.284 b)0.323 c)0.3351 d)0.3414 e)0.3472
我的解法是 C20取1*(0.08)*(0.92)^(19)=0.3282 (沒有答案選)
請強者指點迷津....還是我的算法是不對的?
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