Final answer:
The probability that a randomly selected contestant is only in the beard competition and has a light beard is 0.75
Step-by-step explanation:
To find the probability that a randomly selected contestant is only in the beard competition and has a light beard, we need to look at the information given in the question.
According to the given data, there are 3 contestants with a light beard who are only in the beard competition.
To find the probability, we divide the number of favorable outcomes (3 contestants) by the total number of possible outcomes (4 contestants with a light beard).
So the probability is 3/4 or 0.75.