5 20 (a) What is the probability that a randomly selected pregnancy lasts less than 258 days? The probability that a randomly selected pregnancy lasts less than 258 days is approximately 0.3085 (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.) If 100 pregnant individuals were selected independently from this population, we would expect B. If 100 pregnant individuals were selected independently from this population, we would expect 31 C. If 100 pregnant individuals were selected independently from this population, we would expect pregnancies to last more than 258 days. pregnancies to last less than 258 days. pregnancies to last exactly 258 days. (b) Suppose a random sample of 5 human pregnancies is obtained. Describe the sampling distribution of the sample mean length of pregnancies. and o; -0 The sampling distribution of x is with H (Round to four decimal places as needed.)