You flip a coin 20 times and get tails 15 times. You flip the coin 80 more times. What do you expect to happen to the experimental probability of getting tails as you increase the number of trials?
A. The experimental probability will get closer to 50%.
B. The experimental probability will remain at 75%.
C. The experimental probability will always be greater than the theoretical probability.
D. The experimental probability will get closer to 100%.
A. The experimental probability will get closer to 50%.
The correct answer is:
A. The experimental probability will get closer to 50%.
As the number of trials increases, the experimental probability of getting tails will approach the theoretical probability, which is 50% for flipping a fair coin. In this case, since the initial 20 trials resulted in 15 tails, the experimental probability was 15/20 = 0.75 or 75%. However, as you flip the coin more times (an additional 80 times), the result will likely balance out, and the overall percentage of tails will approach the expected 50%.