Step 1 :The area under the curve in a normal distribution represents the probability of an event occurring within a certain range. In this case, the event is the duration of a human pregnancy, and the range is between 235 and 300 days. The area of 0.9569 represents the proportion of pregnancies that last between these two values.
Step 2 :For the second interpretation, we can think of it in terms of probability. The area under the curve also represents the probability of a randomly selected event (in this case, a human pregnancy) falling within the given range. So, the probability that a randomly selected human pregnancy lasts between 235 and 300 days is 0.9569.
Step 3 :Final Answer: \(\boxed{1. The proportion of human pregnancies that last between 235 and 300 days is 0.9569.}\)
Step 4 :Final Answer: \(\boxed{2. The probability that a randomly selected human pregnancy lasts between 235 and 300 days is 0.9569.}\)