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Chapter 3: Q99SE (page 203)

Given that P(A鈭�B)=0.4andP(A|B)=0.8, findlocalid="1662699184645" P(B).

Short Answer

Expert verified

The value of P(B) is 0.5.

Step by step solution

01

Required formula

The formula is usedP(A|B)=P(A鈭�B)P(B).

02

Finding the value of P(B).

PA|B=P(A鈭�B)PB0.8=0.4PBPB=0.5

Therefore, the value of P(B) is 0.5.

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