The links of pregnancies are normally stupid with a mean of 260 days in Asana deviation of 15 days in a letter from an advice column a wife claim to have given birth 307 days after a brief visit from her husband who is working in another country find the probability of a pregnancy lasting 307 days or longer. If the length of pregnancy is the lowest 2% then the baby is premature. Find the length and separates premature babies from those who are not considered premature