You have a bag with 4 pairs of socks. There are 2 red pairs and 2 black pairs. You pull a sock from the bag and put it back 3 times. What is the probability that you pull out a red sock each time?
Still Need Help?
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (therawbugeyes):
hey so i neeed the answers please
OpenStudy (xenesis98):
a.1/6
b.1/8
c.1/4
d.1/2
e.-1/10
OpenStudy (peachpi):
2 out of 4 pairs are red, so what's the probability that you pick a red pair the first time?
OpenStudy (xenesis98):
1/2?
OpenStudy (xenesis98):
or 50%
Still Need Help?
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (peachpi):
right.
Then you put it back, for each pick so the probability that you pick a red sock is 1/2 for the second and third picks as well.
OpenStudy (xenesis98):
confused
OpenStudy (xenesis98):
so is 1/2 the answer?
OpenStudy (anonymous):
50% chance every time
OpenStudy (xenesis98):
so its right? lol
Still Need Help?
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
Yes
OpenStudy (peachpi):
sorry. The page glitched on me.
It's a 1/2 chance all three times, so you multiply them together to get the overall probability.
\[\frac{ 1}{ 2 }\times \frac{ 1 }{ 2 }\times \frac{ 1 }{ 2 }=\frac{ 1 }{ 8 }\]