Mathematics, 01.12.2020 01:30 juju323261

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

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Assume that the mean length of a human pregnancy is 269 days. If 95% of all human pregnancies last b...

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