Question

if you have a family of 4 children what is the probability of having 1 boy?

Answer 1

1/2 it does not matter how many children you have

Answer 2

let me reword this.... you have a family of 4 children what is the probability that at least 1 is a boy?

Answer 3

Every 1 child, there was a chance to have either a boy or girl; so 1/2 per child, and that chance times itself 4 times, for you only have 1 boy out of 3.\[(1/2)*(1/2)*(1/2)*(1/2)= 1/8=.125=12.5\]

Answer 4

12.5%, wait, so you want ONLY 1 boy or at least 1?

Answer 5

Is it one boy or at least one boy?..

Answer 6

at least one boy

Answer 7

P(at least 1 boy)=1-P(all girls)=1-1/2*1/2*1/2*1/2

Answer 8

At least one boy: 15/16

Answer 9

how did you get 15/16

Answer 10

Look at eashy's answer

Answer 11

Are we including hermaphadites?...

Answer 12

Not sure if you knew stef but this is actually a famous mathematical paradox.. Look up the Boy or Girl paradox

Answer 13

eashy did you get 15/16 also?

Answer 14

Simply put the chance is 15/16 because the only chance that the children wouldn't include a boy is if they were all girls.

Answer 15

P(at least one boy)+P(all girls)=1

Answer 16

Got it Thank You :)