The lengths of pregnancies are normally distributed with a mean of 266   days and a standard deviation of 15   days. a. Find the probability of a pregnancy lasting 308   days or longer. b. If the length of pregnancy is in the lowest 3 ​%, then the baby is premature. Find the length that separates premature babies from those who are not premature.   a. The probability that a pregnancy will last 308   days or longer is nothing . ​(Round to four decimal places as​ needed.)

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.