The length of human pregnancies from conception to birth varies according to
Chapter 0, Problem 3.19(choose chapter or problem)
The length of human pregnancies from conception to birth varies according to adistribution that is approximately Normal with mean 266 days and standarddeviation 16 days. 95% of all pregnancies last between(a) 250 and 282 days.(b) 234 and 298 days.(c) 218 and 314 days.
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