Answer:
[tex]P(B) = 0.90[/tex]
Step-by-step explanation:
Given
[tex]P(A) = 0.1[/tex]
[tex]P(A\ or\ B) = 0.93[/tex]
[tex]P(A\ and\ B) = 0.07[/tex]
Required
[tex]P(B)[/tex]
To do this, we make use of:
[tex]P(A\ or\ B) + P(A\ and\ B) = P(A) + P(B)[/tex]
Make P(B) the subject
[tex]P(B) = P(A\ or\ B) + P(A\ and\ B) - P(A)[/tex]
So, we have:
[tex]P(B) = 0.93 + 0.07 - 0.1[/tex]
[tex]P(B) = 0.90[/tex]