用排除法
把两次调整之间生产线只生产出0个 1个 2个 3个 4个产品的概率算出来
再用1一减就可以了
既
1-[0.1+(0.9*0.1)+(0.9*0.9*0.1)+(0.9*0.9*0.9*0.1)+(0.9*0.9*0.9*0.9*0.1)]
=1-(0.1+0.09+0.081+0.0729+0.06561)
=1-0.40951
=0.59049
即 59.049%
用排除法
把两次调整之间生产线只生产出0个 1个 2个 3个 4个产品的概率算出来
再用1一减就可以了
既
1-[0.1+(0.9*0.1)+(0.9*0.9*0.1)+(0.9*0.9*0.9*0.1)+(0.9*0.9*0.9*0.9*0.1)]
=1-(0.1+0.09+0.081+0.0729+0.06561)
=1-0.40951
=0.59049
即 59.049%