Final answer:
To calculate the probability that more than 90 births in one month would result in twins, we can use the binomial probability formula. Use a TI-83, TI-83 Plus, or TI-84 calculator to find the probability.
Step-by-step explanation:
To calculate the probability that more than 90 births in one month would result in twins, we can use the binomial probability formula. The formula is:
P(x > n) = 1 - P(x ≤ n)
where P(x > n) is the probability of getting more than n successes, P(x ≤ n) is the cumulative probability of getting n or fewer successes. In this case:
p = 0.033, n = 90, and N = 2500.
Now, we can use a TI-83, TI-83 Plus, or TI-84 calculator to find the cumulative probability.