### Video Transcript

Isabella creates a three-sided
spinner using the colors red, green, and blue. She spins the spinner and records
the following results: red, blue, red, green, green, green, red, red, red,
green. Calculate the experimental
probability of spinning green on this spinner.

We are told that Isabella has a
three-sided spinner with three colors: red, green, and blue. The outcomes of the experiment to
spin the spinner have been recorded. We then need to calculate the
experimental probability of spinning green. The experimental probability of an
event is the ratio of the number of outcomes in which this event occurs to the total
number of trials in the experiment. So here we’re calculating the
experimental probability of spinning green. This is equal to the number of
times green was spun over the total number of spins.

Using the set of results, we can
see that green was spun four times. And by counting the number of
results, we can determine that the number of spins must be 10. The fraction four-tenths can be
fully simplified to two-fifths. We can therefore give the answer
that the experimental probability of spinning green is two-fifths. However, as probabilities can be
given as fractions, decimals, or percentages, then 0.4 or 40 percent would also be
valid answers.