Final answer:
The probability that a randomly selected high school student plays organized sports is approximately 14.3%.
Step-by-step explanation:
To find the probability that a randomly selected high school student plays organized sports, we need to divide the number of students who play organized sports by the total number of randomly selected high school students.
In this case, the number of students who play organized sports is 43 and the total number of randomly selected high school students is 300.
Therefore, the probability that a randomly selected high school student plays organized sports is 43/300, or approximately 0.143 (rounded to three decimal places) or approximately 14.3% (rounded to one decimal place).