The experimental probability of getting a purple gumball is 1/5.
The experimental probability of getting a purple gumball can be found by dividing the number of purple gumballs by the total number of gumballs.
In this case, we are given that there were 12 purple gumballs and 48 other gumballs dispensed last week.
To find the probability of getting a purple gumball, we divide the number of purple gumballs by the total number of gumballs:
P(purple) = 12 / (12 + 48)
Simplifying this fraction gives us:
P(purple) = 12 / 60
This fraction can be simplified further by dividing the numerator and denominator by their greatest common divisor, which in this case is 12:
P(purple) = 1 / 5