Question 1200321
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the pregnancy length in days for a population of new mothers can be approximated 
by a normal distribution with a mean of 267 days and a standard deviation of days. 
​(a) What is the minimum pregnancy length that can be in the top 12​% of pregnancy​ lengths? 
​(b) What is the maximum pregnancy length that can be in the bottom 7​% of pregnancy​ lengths?
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The post is DEFECTIVE, since the numerical value of the standard deviation is lost.