Question

Which of the following formulae is used to determine the experimental probability of an event occurring 15 times out of 50 trials?
Number of favorable outcomesTotal number of possible outcomes
The number of times the event occursThe total number of trials
Number of favorable outcomesNumber of unfavorable outcomes
Number of unfavorable outcomesNumber of favorable outcomes

Answer 1

To determine the experimental probability of an event occurring, the formula used is:

\[
\text{Experimental Probability} = \frac{\text{Number of times the event occurs}}{\text{Total number of trials}}
\]

In this case, the event occurs 15 times out of 50 trials. Thus, the formula can be applied as follows:

\[
\text{Experimental Probability} = \frac{15}{50}
\]

So, the correct option among the choices you provided is:

**The number of times the event occurs / The total number of trials**.