Question

Medal
During a ultrasound, the technician reveals that she is carrying quadruplets - 4 fraternal twins! Because there are four babies in the womb, the technician is unable to tell the gender of the babies.
(a) Find the probability that the quadruplets will all be boys. Express your answer as a fraction or an exact decimal - do not round.

(b) What is the probability that the couple will have 1 boy and 3 girls?


(c) What is the probability that the oldest three children will be female?

Answer 1

would you like help ?

Answer 2

a) find probability of BBBB

Answer 3

how

Answer 4

yes i would like your help please

Answer 5

the probability of getting a boy is 1/2

Answer 6

ok is that part a?

Answer 7

that is part of part a) :)

Answer 8

it is asking for BBBB

Answer 9

ya i understand

Answer 10

ok,

Answer 11

for part b) we want BGGG (and there are others

Answer 12

3/4

Answer 13

b)
BGGG
GBGG
GGBG
GGGB

Answer 14

wait, what did you get for part a) ?

Answer 15

1/2

Answer 16

thats incorrect

Answer 17

P( BBBB ) = P(B ) * P(B) * P(B) * P(B)

Answer 18

3/4

Answer 19

1/2 * 1/2 * 1/2* 1/2

Answer 20

4/8

Answer 21

nope :)

Answer 22

1/2 * 1/2 = 1/4

correct?

Answer 23

yes

Answer 24

1/8

Answer 25

ok, almost there

Answer 26

ohhhh ya i c it yaa

Answer 27

so you can use a similar idea (multiply probabilities) for part b)