... (a) What is the probability that a randomly selected pregnancy lasts less than 261 days? The probability that a randomly selected pregnancy lasts less than 261 days is approximately. (Round to four decimal places as needed.) Interpret this probability. Select the correct choice below and fill in the answer box within your choice. (Round to the nearest integer as needed.) OA. If 100 pregnant individuals were selected independently from this population, we would expect OB. If 100 pregnant individuals were selected independently from this population, we would expect OC. If 100 pregnant individuals were selected independently from this population, we would expect (b) Suppose a random sample of 25 human pregnancies is obtained. Describe the sampling distribution of the sample mean length of pregnancies. pregnancies to last exactly 261 days. pregnancies to last more than 261 days. pregnancies to last less than 261 days.