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An experiment involves selecting a numbered chip, some black and some white, from a bag of chips. The probability of selecting a black chip with an even number is 1/2 . The probability of selecting a black chip is 3/5 .

What is the probability of selecting a chip with an even number given that the chip is black?

 Dec 17, 2018
edited by Guest  Dec 17, 2018
edited by Guest  Dec 17, 2018
edited by Guest  Dec 17, 2018
 #1
avatar+94526 
+2

Let A = Probability of selecting a black chip with an even number = (1/2)

Let B = Probabilty of selecting a black chip = (3/5)

 

P ( A  l B )  =   P (A) * P(B)         (1/2) * (3/5)

                      ___________  =  __________ =             1 / 2

                          P(B)                    (3/5)

 

This makes sense....we already have a black chip in hand.....there is a (1/2) probability that it has an even number

 

 

 

cool cool cool

 Dec 17, 2018

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