Answer:
25%
Explanation:
The experimental probability of drawing a white marble can be found by dividing the number of times a white marble was chosen by the total number of trials:
Experimental probability of drawing a white marble = number of times a white marble was chosen / total number of trials
In this case, the number of times a white marble was chosen is 18, and the total number of trials is 80, so:
Experimental probability of drawing a white marble = 18/80 = 0.225 or 22.5%
To compare the experimental probability with the theoretical probability, we need to know the total number of marbles in the bag and the number of white marbles in the bag. Let's assume that there are 4 colors of marbles in the bag (red, white, black, and green), and that each color has an equal number of marbles. This means that there are a total of 4 x 18 = 72 marbles in the bag, and 18 of them are white.
The theoretical probability of drawing a white marble can be found by dividing the number of white marbles by the total number of marbles:
Theoretical probability of drawing a white marble = number of white marbles / total number of marbles
In this case, the number of white marbles is 18, and the total number of marbles is 72, so:
Theoretical probability of drawing a white marble = 18/72 = 0.25 or 25%
Comparing the two probabilities, we can see that the experimental probability (22.5%) is slightly lower than the theoretical probability (25%). This could be due to chance or sampling error in the experiment, or it could indicate that the actual probability of drawing a white marble is slightly lower than the theoretical probability.