Question

a. What is the probability of having 2 boys and 1 girl? Probability of having 1 girl first is 0.5, then probability of 2 boys following is .25, .5 x .25 = .125
b. What is the probability of having children in the following order: girl, boy, boy?

I need help with the second one, is the first right?

Answer 1

whats the context
?

Answer 2

Probability tree

Answer 3

you have a 50 percent chance of having a boy or girl, i dont understand the question

Answer 4

What is the probability of having 2 boys and 1 girl

Answer 5

While it is true that the probability of having a girl, then a boy, then another boy is \(0.125\), if you count other orders, you need to multiply by permutations.

Answer 6

Write down the number of permutations as follows:
BBB
BBG
BGG
BGB
GGG
GGB
GBB
GBG
To answer the first part, count the number of permutations giving only 1 girl. Then divide by the total number of permutations (8).