Question

Evan is picking marbles out of a bag. The results are recorded below. Red 24 Blue 16Yellow 10 Green 22Black 8 What is the experimental probability of picking a black marble? A. 90% B. 10% C. 1%

Answer 1

Choice B: 10%.

Explanation:

The experimental probability of an event is the probability determined from the results of the experiment.

Now, in our case the experimental probability of picking a black marble would be the number of black marbles picked divided by the total number of marbles:

Experimental probability =( # black marbles / # total marbles ) x 100%

Now,

# total marbles = 24 + 16 + 10 + 22 + 8 = 80 marbles

and

# black marbles = 8 black marbles

Therefore,

Experimental probability =( 8 / 10 ) X 100%

Experimental probability = 10%

Hence, the correct choice is B.