To find the probability, we just need to divide the amount of possibilities that represent sucess, by the total amount of possibilities.
We have four possibilities representing sucess(0, 1, 2 and 3), and a total amount of eight(0, 1, 2, 3, 4, 5, 6, 7).
Our probability is:
[tex]\frac{4}{8}[/tex]Writing this as a percentage:
[tex]\frac{4}{8}=\frac{4}{8}\times\frac{12.5}{12.5}=\frac{50}{100}[/tex]We have a probability of 50%.