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 either green or purple. Write your answer in simplest form.
1/10
1/3
1/5
2/15
10 of them are green or purple
there are 30 total
10/30 = 1/3
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To find the experimental probability of randomly selecting a marble that is either green or purple, we need to calculate the ratio of the number of desired outcomes (green or purple marbles) to the total number of possible outcomes (total number of marbles).
In this case, the number of green marbles is 4 and the number of purple marbles is 6. Therefore, the total number of desired outcomes is 4 + 6 = 10.
The total number of marbles is the sum of blue, yellow, red, green, and purple marbles, which is 7 + 5 + 8 + 4 + 6 = 30.
So, the experimental probability is 10/30, which simplifies to 1/3.
Therefore, the answer is 1/3.