Question

jasmine rolls a number cube 72 times. the number 2 is rolled 13 times and the number 3 is rolled nine times. to the nearest whole percent, what is the experimental probability of rolling a 2 or 3? 7% 18% 22% 31%

Explanation:

Step1: Calculate total favorable outcomes

The number of times 2 is rolled is 13 and the number of times 3 is rolled is 9. So the total number of favorable outcomes (rolling a 2 or 3) is $13 + 9=22$.

Step2: Calculate experimental probability

The experimental - probability formula is $P=\frac{\text{Number of favorable outcomes}}{\text{Total number of trials}}$. Here, the total number of trials is 72. So $P=\frac{22}{72}$.

Step3: Convert to percentage

To convert the fraction to a percentage, we calculate $\frac{22}{72}\times100=\frac{2200}{72}\approx30.56\%$. Rounding to the nearest whole - percent gives 31%.

Answer:

D. 31%