Question

A bag holds 2 yellow, 1 green, and 2 red marbles. If you were to draw a marble from the bag 150 times, and replace it after each draw, how many yellow marbles would you expect to draw?

A.50
B.60
C.30
D.120
I think it is B...?

Answer 1

5 marbles, 2 are yellow
so p(yellow) = 2/5

because you replace, events are independent
(2/5) of the marbles you draw will be yellow
(2/5) 150 = 60
yes. B

Answer 2

Thank you

Answer 3

thanks