Answer :
Final answer:
The length of pregnancy follows a Normal distribution with a mean of 266 days and standard deviation of 16 days. The 68-95-99.7 rule can be used to estimate the duration of pregnancies.
Explanation:
Length of Pregnancy
The length of human pregnancy, from conception to birth, follows an approximately Normal distribution with a mean of 266 days and standard deviation of 16 days.
Using the 68-95-99.7 rule, we can conclude that:
- About 68% of pregnancies will last between (mean - 1 standard deviation) and (mean + 1 standard deviation) days, or between 250 and 282 days.
- About 95% of pregnancies will last between (mean - 2 standard deviations) and (mean + 2 standard deviations) days, or between 234 and 298 days.
- About 99.7% of pregnancies will last between (mean - 3 standard deviations) and (mean + 3 standard deviations) days, or between 218 and 314 days.
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