From a barrel of colored marbles, you randomly select 7 blue, 5 yellow, 8 red, 4 green, and 6 purple marbles.

Find the experimental probability of randomly selecting a marble that is not yellow. Write your answer in simplest form.
A. start fraction 1 over 30 end fraction
B. five-sixths
C. start fraction 2 over 15 end fraction
D. start fraction 1 over 6 end fraction.

1 answer

There are a total of 7+5+8+4+6=30 marbles, and 5 of them are yellow. Therefore, there are 30-5=25 marbles that are not yellow. The experimental probability of randomly selecting a marble that is not yellow is 25/30, which simplifies to 5/6.

Therefore, the answer is B. five-sixths.