Question

A bag contains 30 red marbles, 2 white marbles, and 8 gray marbles. You randomly pick out a marble, record its color, and put it back in the bag. You repeat this process 200 times. How many white or gray marbles do you expect to get?
If you randomly pick out a marble and replace it 200 times, you can expect


white or gray marbles to be chosen.

Answer 1

Answer:

If you randomly pick out a marble and replace it 200 times, you can expect 50 white or gray marbles to be chosen.

Explanation:

30 + 2 + 8 = 40

white & gray = 10

10/40 = 0.25 or 25%

0.25 x 200 = 50