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1. ### Probability question?

You are right its B - But Always remember P(A)+P(A)=1...

2 Answers · Science & Mathematics · 25/11/2011

2. ### The probability of the number of days before a new machine will become operational is given in the following?

a) P(A) = P(5)+P(6) = .41+.20 =.61 b) P(B) = P(3)+P(4)+P(5) = .08+.24+.41 = .73 c) P(A')=1-P(A) = 1-.24= .76 d) A= {5,6} B= {3,4,5} A∩B = {5} P(A∩B) = P(5...

1 Answers · Science & Mathematics · 06/10/2011

3. ### Boolean manipulation ( minimise the following expressions)?

Boolean algebra has rules just like numerical algebra. If you use "1" as "true" and "0" as "false," then Boolean algebra can symbolically use addition as an "or" and multiplication for "and." The same symbolic...

1 Answers · Science & Mathematics · 26/08/2011

4. ### Find P(A) if P(Ā)=0.018?

We know that P(A)+P(~A) = 1, Now subtract P(~A) from both sides P(A) + P(~A) - P(~A) = 1 - P(~A) Now we have P(A) = 1 - P(~A) - .018 = .0982, since...

1 Answers · Science & Mathematics · 13/06/2011

5. ### Mobius Transformations?

...z = e^(it) for some t in [0, 2π). So, T(z) = c(e^(it) - a) / (1 - ā e^(it)). Now, we show that |T(z)| = 1. |T(z)|² = |c...

1 Answers · Science & Mathematics · 23/03/2011

6. ### If A ⊆ B, is Ā ⊆ B (also with bar on top, dont know how to type it)?

... that A = ∅ (∅ is the empty set) and B = {1}. Then Ā = {Everything in the universe} and B(bar) = {everything is the universe...

1 Answers · Science & Mathematics · 25/10/2010

7. ### complex number maths question?

... i.i = -1) A = 5 - 5i (2) The conjugate of A is ; Ā = 5 + 5I and than: (5 + 5i)/2i = (multiply by i (5 + 5i).i/-2 = (5i - 5)/-2...

1 Answers · Science & Mathematics · 06/10/2010

8. ### Do you have any ways to figure out this homework problem. Use P(not a) to find P(a).?

I'll use the more common notation, Ā, for Not A. If A is the only event in the sample...

2 Answers · Science & Mathematics · 06/11/2013

9. ### Probability Questions, please help (I am sure one of the statistics buffs out their can help). URGENT?

... first urn is selected" ; p(A) = 0,9 so p(Ā) = 0,1 which is the prob that the second urn is selected...

2 Answers · Science & Mathematics · 18/04/2010

10. ### Prove or disprove: If Ā⊆B then A∪B=U.?

Hi If Ā ⊆ B, then everything that is not in A is in B...either in or not in A, everything is in A ∪ B so long as Ā ⊆ B. To say that everything is in A ∪ B is...

1 Answers · Science & Mathematics · 07/04/2010