Question

A bag contains the same number of each of four different colors of marbles.

A marble is drawn, its color is recorded, and then the marble is placed back
in the bag. This process is repeated until 40 marbles have been drawn. The
table shows the results. For which marble is the experimental probability of
drawing the marble the same as the theoretical probability?

Yellow=12

Red=10

Blue=7

Black=11

Answer 1

Answer: Red.

Explanation:

There are 10 marbles of each colour as described here: 'A bag contains the same number of each of four different colors of marbles.' The theoretical probability of drawing any marble of a select colour is 1/4. The red marble was drawn 10 times, making it fit this 1/4 theoretical probability.