Ted wanted to compare theoretical probablity to experimental probability. He rolled two standard 6 sided dice 50 times, and got a sum of nine a total of 11 times. Calculate the experimental probability of rolling a sum of nine with two standard dice.

Answer 1

To calculate the experimental probability, you would divide the number of times the desired outcome occurred by the total number of trials.

Experimental Probability = Number of times desired outcome occurred / Total number of trials

In this case, the number of times Ted rolled a sum of nine with two dice is 11, and the total number of trials is 50.

Experimental Probability = 11 / 50 = 0.22

Therefore, the experimental probability of rolling a sum of nine with two standard dice is 0.22 or 22%.