SOLUTION: Mr.Washington picks a random student each morning to take roll. There are 12 girls and 10boys in the class. What is the probability that he picks a boy two days in a row (the same
Algebra ->
Probability-and-statistics
-> SOLUTION: Mr.Washington picks a random student each morning to take roll. There are 12 girls and 10boys in the class. What is the probability that he picks a boy two days in a row (the same
Log On
Question 1032469: Mr.Washington picks a random student each morning to take roll. There are 12 girls and 10boys in the class. What is the probability that he picks a boy two days in a row (the same boy can be picked twice Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Mr.Washington picks a random student each morning to take roll. There are 12 girls and 10boys in the class. What is the probability that he picks a boy two days in a row (the same boy can be picked twice.
---
The selections are independent because the same boy can be selected both days.
Ans: P(boy and boy) = (10/22)^2 = (5/11)^2 = 25/121
----------------
Cheers,
Stan H.
------------
(