Sadiq rolls a regular six-sided number cube 10 times and gets an even number 7 times. How does his experimental probability compare to the theoretical probability?(1 point)

Responses

The theoretical and experimental probabilities are opposites.
The theoretical and experimental probabilities are opposites.

The experimental probability was greater than the theoretical probability.
The experimental probability was greater than the theoretical probability.

The theoretical probability is greater than the experimental probability.
The theoretical probability is greater than the experimental probability.

The experimental and theoretical probability are equal.

1 answer

To compare the experimental probability to the theoretical probability, we first need to calculate each one.

Theoretical Probability: For a regular six-sided number cube (die), the even numbers are 2, 4, and 6. There are 3 even numbers out of 6 possible outcomes, so the theoretical probability of rolling an even number is:

\[ P(\text{even}) = \frac{\text{Number of favorable outcomes}}{\text{Total outcomes}} = \frac{3}{6} = \frac{1}{2} = 0.5 \]

Experimental Probability: Sadiq rolled the die 10 times and got an even number 7 times, so the experimental probability of rolling an even number is:

\[ P(\text{even}) = \frac{\text{Number of even outcomes}}{\text{Total rolls}} = \frac{7}{10} = 0.7 \]

Comparison: Now, we can compare the experimental probability (0.7) to the theoretical probability (0.5):

  • The experimental probability (0.7) is greater than the theoretical probability (0.5).

Therefore, the correct response is:

The experimental probability was greater than the theoretical probability.