The pregnancy length in days for a population oi new.r mothers can be approximated by a normal distribution with a mean oi 263 days and a standard deviation of '11 days. (a) What is the minimum pregnancy length that can be in the top 10% of pregnancy lengths? (b) What is the maximum pregnancy length that can be in the bottom 5% of pregnancy lengths? (a) The minimum pregnancy length is D days. (Round to one decimal place as needed.)