一批產(chǎn)品中,一,二,三等品率分別為0.8,0.16,0.04.若規(guī)定一,二等品為合格品,求產(chǎn)品的合格率.幫忙解答的先謝謝了.

熱心網(wǎng)友

一批產(chǎn)品中,一,二,三等品率分別為0.8,0.16,0.04.若規(guī)定一,二等品為合格品,求產(chǎn)品的合格率.幫忙解答的先謝謝了. 產(chǎn)品的合格率為:0.8+0.16=0.96.Ｐ(A)=0.8Ｐ(B)=0.16Ｐ(A+B)=Ｐ(A)+Ｐ(B)=0.8+0.16=0.96.

熱心網(wǎng)友

產(chǎn)品的合格率 = 0.8 + 0.16 = 0.96