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Vedmedyk [2.9K]
2 years ago
12

Assume that the mean length of a human pregnancy is 269 days. If​ 95% of all human pregnancies last between 249 and 289 ​days, w

hat is the standard deviation of the distribution of lengths of human​ pregnancies? What percent of human pregnancies are expected to last at least 287 ​days?
Mathematics
1 answer:
o-na [289]2 years ago
7 0

Answer:93% not sure

Step-by-step explanation:

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