a)
the probability that you get a blue then a red is:
both whites are:
and for b)
I'm assuming A' means the complement of A? so we get
Hello All, Please Help.
1.) There are 3 white marbles, 4 blue marbles and 5 red marbles in a bag. If they are picked at random with replacement, find the probability of:
a.) The first being a blue and the second a red. I got: 5/36
b.) The probability they are both whites. I got 1/16
and this one:
If Pr(A) = 0.5
Pr(B) = 0.4
and Pr(A and B) = 0.1
Find Pr(A' and B') i got: 0.2
Find Pr(A' and B) i got: 0.3
Find Pr(A or B) i got: 0.8
THANKS!
By the way, for b) a Karnaugh table is a fast and efficient way of doing this problem. You'll find a few examples in this forum. For example: http://www.mathhelpforum.com/math-he...3-prob-qn.html