Question

The table shows the results of randomly selecting colored marbles from a bag 40 times. The marble was returned to the bag after each selection.

Based on these results, what is the expected probability of randomly selecting a green marble from the bag in one attempt?

A. 0.125
B. 0.20
C. 0.80
D. 1.0

(show your work please)

Answer 1

B. 0.20

Explanation:

the probablilty of selecting a green marble is 8/40 simplified to 1/5

8/40 = 1/5

1/5=0.20