Kayleigh has a spinner with sections labeled a‒e. all sections are the same size. she spins it 20 times with outcomes as follows:

outcome
number of times

a
4

b
4

c
5

d
5

e
2

a) find the theoretical probability that the spinner lands on a or e.
b) find the experimental probability that the spinner lands on a or e.
c) explain why the probabilities are different.