The length of human pregnancies from conception to birth varies according to a distribution that can be modeled by a normal random variable with mean 266 days and standard deviation 16 days. Question 1. What percent of pregnancies last less than 240 days? Note that the answer is requested as a percent. Use 2 decimal places in your answer. 0/0 U Question 2. What percent of pregnancies last between 240 and 270 days? Note that the answer is requested as a percent. Use 2 decimal places in your answer. 0/0 U Question 3. The longest 20% of pregnancies last at least how many days? (round to the nearest whole day) days. U