QuestionThe lengths of pregnandes of humans are normally distributed with a mean of 268 days and a standard deviation of 15 days. Find the probability of a pregnancy lasting more than 300 days A) 0.3189 B) 0.2375 C) 0.9834 D) 0.0166

Studdy Solution
To find the probability of a pregnancy lasting more than 300 days, subtract the cumulative probability from 1:
$$P(X > 300) = 1 - P(Z \leq 2.13) = 1 - 0.9834 = 0.0166$$
The probability of a pregnancy lasting more than 300 days is:
$$\boxed{0.0166}$$