Final answer:
To find the probability that a randomly chosen individual from the group is under 18 given that the individual is tall, we need to use conditional probability. However, more information is needed to calculate the probability.
Step-by-step explanation:
To find the probability that a randomly chosen individual from the group is under 18 given that the individual is tall, we need to use conditional probability. Let A be the event that the selected individual is over 6 ft tall, and let B be the event that the selected individual is under 18. We want to find P(B|A), the probability of B given A. We can use Bayes' theorem to calculate this:
P(B|A) = (P(A|B) * P(B)) / P(A)
Since we don't have the values of P(A|B) and P(B), we cannot directly calculate P(B|A) without more information.