Question

Page roles a number cube 60–4 times. The number 4 comes up 14 times. The number three comes up six times. Round to the nearest whole percent, what is the experimental probability of rolling a three or four?

Answer 1

31.25%.

Explanation:

The experimental probability is the ratio between the number of times an event occurs and the total number of trials.

In this case, the total number of trials is 64, because Page roles it 64 times.

Notice that the probability is about one event or the other, that indicates we need to sum both events.

`P=(14+6)/(64) =(20)/(64) \approx 0.3125`

Multiplying by 100, we have a probability of 31.25%.

Therefore, the experimental probability of getting three or four is 31.25%.