Answer:
To calculate the experimental probability that a randomly selected adult would choose to be at most 39 years old, we need to determine the total number of adults surveyed and the number of adults who would choose to be at most 39 years old.
According to the survey results, there were 875 people who would choose to be under age 20, 1025 people who would choose to be between 20 and 29, 676 people who would choose to be between 30 and 39, and 450 people who would choose to be over 40.
To find the total number of adults surveyed, we can sum up these values:
Total number of adults surveyed = 875 + 1025 + 676 + 450 = 3026
Now, let's determine the number of adults who would choose to be at most 39 years old. This includes those who would choose to be under age 20, between ages 20 and 29, and between ages 30 and 39.
Number of adults choosing at most 39 years old = 875 + 1025 + 676 = 2576
Finally, we can calculate the experimental probability by dividing the number of adults choosing at most 39 years old by the total number of adults surveyed:
Experimental probability = Number of adults choosing at most 39 years old / Total number of adults surveyed
Experimental probability = 2576 / 3026 ≈ 0.851 (rounded to the nearest thousandth)
Therefore, the experimental probability that a randomly selected adult would choose to be at most 39 years old is approximately 0.851.
Explanation: