SOLUTION: If P(B) = 0.4, P(A or B) = 0.7, and P(A and B) = 0.3, find P(A).

SOLUTION: If P(B) = 0.4, P(A or B) = 0.7, and P(A and B) = 0.3, find P(A).

Algebra.Com

Question 1137975: If P(B) = 0.4, P(A or B) = 0.7, and P(A and B) = 0.3, find P(A).

Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
p(a)+p(b)-p(a and b)=p(a or b)
p(a)+0.4-0.7=0.3
p(a)=0.6

RELATED QUESTIONS
4. Compute the probability. a. If P(A) = 0.2 , P(B)= 0.4, and P(A and B) = 0.1, find... (answered by ikleyn)

If P(A and B) = 0.2 and P (B|A) = 0.5, find P... (answered by math_tutor2020,greenestamps)

If A and B are events with P(A)=0.8, P(A OR B)=0.87, P(A AND B)=0.23, find... (answered by math_tutor2020)

Suppose P(A)=0.9, P(B)=0.4 and P(B|A)=0.2. What is... (answered by math_tutor2020)

3- For two events A and B P(A)= 0.53,P(B) 0.36 and P(AnB)=0.29. Find a. P(A/B) b.... (answered by ikleyn)

P(A) = 0.56, P(A and B) = 0.15, find... (answered by Boreal,ikleyn)

ii. If P(B)=0.30, P(A│B)=0.60, P(B’)=0.70 and P(A│B’)=0.50, find... (answered by ikleyn)

if P(A)= 7/36, P(B)= 1/6, and P(A and B)= 0, what can you say about P(A or... (answered by stanbon)

If P(A) > 0, P(B) > 0 and P(A) < P(A|B), show that P(B) < P(B|A) Thank... (answered by ikleyn)

Events A and B are called independent if P(A and B) = 0 P(A or B) = 0 P(A|B) =... (answered by Theo)