Using it's concept, it is found that the probability that the golf ball is green or red is of 0.55.
A probability is given by the number of desired outcomes divided by the number of total outcomes.
In this problem, there are 6 + 5 + 9 = 20 balls, of which 11 are green or red, hence the probability is given by:
p = 11/20 = 0.55.
More can be learned about probabilities at https://brainly.com/question/14398287
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