Isaiah has a bag that contains apple chews, lemon chews, and watermelon chews. He performs an experiment. Isaiah randomly removes a chew from the bag, records the result, and returns the chew to the bag. Isaiah performs the experiment 38 times. The results are shown below: An apple chew was selected 33 times.
A lemon chew was selected 3 times.
A watermelon chew was selected 2 times.

Based on these results, express the probability that the next chew Isaiah removes from the bag will be watermelon chew as a fraction in simplest form.