Question

A bag contains 4 yellow, 2 red, and 6 green marbles. Two marbles are drawn. The first is replaced before the second is

drawn. A random variable assigns the number of red marbles to each outcome. Calculate the expected value of the random
variable.

A) 0.67
B) 0.56
C) 0.17
D) 0.33

Answer 1

The number of red marbles pulled is C: 0.17

Here's why:
2+6+4= 12
2/12= 1/6
1/6= .166666667 or about .17

I hope this helps:)

Answer 2

d

Explanation: