Assume that the probability of having a boy and the probability of having a girl

Question

Assume that the probability of having a boy and the probability of having a girl are equal. Construct a tree diagram that represents all the gender combinations possible for a couple that plans to have two children. What is the probability of having two girls? 1/8 1/4 1/2 1 What is the probability of having both a boy and a girl? 1/8 1/4 1/2 1 Consider drawing two marbles (without replacement) from a bag that contains 5 red marbles, 4 blue marbles and 1 green marble. Construct a tree diagram that lists all of the possible outcomes along with their probabilities. What is the probability of drawing two red marbles? 1/9 1/8 2/9 1/3 What is the probability of drawing a green marble? 1/3 1/4 1/8 1/5 What is the probability of not drawing a green marble? 1/3 1/5 2/3 4/5 Given that you drew a blue marble first, what is the probability that you draw another blue marble? 1/4 1/3 1/2 1

Explanation / Answer

Ans 1 :sample space={MF,MM,FF,FM}

Ans 2 : 1/4

Ans 3: 1/4

Ans 4: sample space=(RR,RB,BB,GB,GR,GG)

Ans 5. 2/9

Ans 6: 1/5

Ans 7 : 4/5

Ans 8: 1/3

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