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1 - it has been found that 8 % of all automobiles on the road have defective brakes . If 8 automobiles are stopped and checked by the police , find the probability that at least one will have defective brakes ?
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الإحتمـآل بـ 8% بـ قسمتوٍآ علىآ 100 يعطيكـ ~> P=0.8
وٍبمآإ إنوـآ قآل at least <~ حنسستخدمـَ قآإنوٍوٍنـ المكملة ~
p(E)=1-0.8=0.92
p(E)=1-(0.92)^8
=0.487
^^
وٍالمسئلة التآنية بنفسً الطرٍيقة ~
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بالتوٍفيـ’ق