Final answer:
To find the number of individuals in a sample with a specified characteristic, you need to consider the number of trials (n), the probability of success (p), and the total sample size.
Step-by-step explanation:
To find the number of individuals in a sample with a specified characteristic, you need to consider the number of trials (n), the probability of success (p), and the total sample size. For example, if you have a binomial experiment with 200 trials and a success rate of 1.28%, you can calculate the number of individuals who will develop the disease using the formula:
(n choose x) * (p^x) * (q^(n-x))
Where:
- n is the total number of trials (200 in this case)
- x is the number of individuals with the specified characteristic
- p is the probability of success (1.28%)
- q is the probability of failure (100% - p)