The probability of two events A and B are0.25 and 0.40 respectively. The probability that both A and B occur is 0.15. The probability that neither A nor B occur is _________

• we are apply that formula..............
  P(AorB)=P(A)+P(B)-P(A AND B)
  =.25+.40-.15
  =.50
  but the probability of neither A nor B=1-.50
  =.50
  so correct ans is .50
• 10 years agoHelpfull: Yes(9) No(2)
• 0.5
  
  Probability neither A nor B occur=
  1-[(Prob. A occur +Prob. B occur)-Prob. both A & B occurs)]
  =1-[(0.25+0.40)-0.15]
  =0.5
• 10 years agoHelpfull: Yes(6) No(0)
• P(AUB)'=1-P(AUB)=1-(P(A)+P(B)-P(AnB))=1-P(A)-P(B)+P(AnB)=1-0.25-0.40+0.15=0.50
• 10 years agoHelpfull: Yes(1) No(0)
• 1-p(a+b)
  =1-0.25-0.40+0.15
  =0.50
• 10 years agoHelpfull: Yes(1) No(0)
• .45 by solvingwe get the ans
• 9 years agoHelpfull: Yes(1) No(0)
• neither A nor B= 1- (A or B) = 1- ( .25 + .40 - .15) =.50
• 10 years agoHelpfull: Yes(0) No(0)
• p(aUb)=p(a)+p(b)-p(a intersection b)
  p(aUb)=0.50
  ans=p(aUb)-0.50
  ans=0.50
• 10 years agoHelpfull: Yes(0) No(0)
• Given data:-
  p(A)=0.25
  p(B)=0.40
  p(A & B)=0.15
  p(A nor B)=0.25+0.40-0.15=0.50
• 10 years agoHelpfull: Yes(0) No(0)
• the ans is
  ,50
• 9 years agoHelpfull: Yes(0) No(0)
• (1-0.25)*(1-0.40)=0.75*0.60
• 8 years agoHelpfull: Yes(0) No(1)
• P( notA & notB ) = .75 x .60 = .45
• 7 years agoHelpfull: Yes(0) No(0)
• occurrence of both is p(a and b)=p(a)+p(b)-p(a or b)
  not to occur is p(a nor b)+occur p(a and b)=1
• 7 years agoHelpfull: Yes(0) No(0)