SOLUTION: joey put 4 red marbles, 5 green marbles, and 2 yellow marbles in a bag. He took one marble out at random and then replaced it. How many times out of 100 draws could he expect to dr

Question 429724: joey put 4 red marbles, 5 green marbles, and 2 yellow marbles in a bag. He took one marble out at random and then replaced it. How many times out of 100 draws could he expect to draw out a red marble?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
joey put 4 red marbles, 5 green marbles, and 2 yellow marbles in a bag. He took one marble out at random and then replaced it. How many times out of 100 draws could he expect to draw out a red marble?
---
Binomial Problem with n = 100 and p = 4/11
---
E(x) = np = 100(4/11) is approximately 36.36..
====================
Cheers,
Stan H.
RELATED QUESTIONS
) Bag 1 contains 12 green marbles, 5 blue marbles, and 3 yellow marbles. Bag 2 contains 8 (answered by checkley71)

a marble is selected at random containing 5 red marbles, 3 yellow marbles and 2 green... (answered by Jstrasner)

8. A bag contains 4 red marbles, 3 yellow marbles, 2 black marbles and 1 green marbles.... (answered by Mathtut)

help me please, and show all work thank you :) A bag contains 3 red marbles , 7 yellow... (answered by macston)

Hi can someone help with this please? Thanks show all work please. A bag contains 3... (answered by solver91311)

A bag contains 2 red marbles,4 green marbles, and 4 blue marbles. You choose one marble... (answered by edjones)

A bag of marbles contains 4 red marbles, 3 green marbles, 1 yellow marble, and 4 blue... (answered by edjones)

There are 4 blue marbles, 5 red marbles, 1 green marble, and 2 black marbles in a bag.... (answered by ikleyn)

A bag contains 5 green marbles, 4 red marbles, 7 blue marbles, and 9 yellow marbles.... (answered by oscargut)