SOLUTION: For every 3 white marbles in the bag there are 7 black marbles. If Margaret pulls out a marble 50 times and always replaces it how many times would you expect her to pull out a bla

SOLUTION: For every 3 white marbles in the bag there are 7 black marbles. If Margaret pulls out a marble 50 times and always replaces it how many times would you expect her to pull out a bla

Algebra.Com

Question 400386: For every 3 white marbles in the bag there are 7 black marbles. If Margaret pulls out a marble 50 times and always replaces it how many times would you expect her to pull out a black marble?
Answer by robertb(5830) (Show Source): You can put this solution on YOUR website!
times.
RELATED QUESTIONS
please help me. There are 6 black marbles, 6 white marbles, and 7 red marbles in a bag.... (answered by ikleyn)

You have a bag of marbles. In your bag there are 5 red, 3 green, 6 white, 3 blue, and 1... (answered by lynnlo)

A bag contains 8 white marbles, 4 black marbles, and 3 red marbles. You pick out a... (answered by ikleyn)

In a bag of 10 marbles, there are 5 blue marbles, 3 red marbles, and 2 white marbles.... (answered by stanbon)

In a bag of 10 marbles, there are 5 blue marbles, 3 red marbles, and 2 white marbles.... (answered by Fombitz)

There are 3 red and 7 black marbles in a bag. If I am blindfolded, how many times must I (answered by edjones)

Could someone show me how to work this out and find the answer. I am lost. All marble... (answered by ptaylor)

if a marble is chosen at random from a bag containing 9 white marbles and 3 black... (answered by edjones)

For approximately every 420 red marbles there are 35 black marbles and 24 white marbles.... (answered by rfer)