Hello, John and Doves,
Possible date of the Rapture...
From Wednesday, September 23, 2015
Subtracted 266 days
Result: Wednesday, December 31, 2014
266 days is the average length of human gestation. The standard deviation is about 16 days. So 99.7% of all pregnancies fall between 218 days and 314 days.
Will someone answer this Statistics (College Level) question?
The length of human pregnancies from conception birth varies according to a distribution that is approximately Normal (What does that mean?) with mean 266 days and standard deviation 16 days. Use the 68-95-99.7 rule to answer the following questions.
A. Almost all (99.7%) pregnancies fall in what range of lengths?
B. How long are the longest 2.5% of all pregnancies?
A normal distribution means that 68% of all outcomes fall between -1 and +1 standard deviations of the mean, 95% of all outcomes fall between -2 and +2 standard deviations of the mean, and 99.7% of all outcomes fall between -3 and +3 standard deviations from the mean.
A) Since we're wanting the 99.7% range, just add 3 and subtract 3 standard deviations from the mean. That is, the range of lengths is 266 - 3(16) < X < 266 + 3(16). So 99.7% of all pregnancies are between 218 and 314 days.
B) The longest 2.5% of all pregnancies are just 2 standard deviations above the mean. So the longest 2.5% of pregnancies are at least 266 +2(16) = 298 days long.
It is written,
While people are saying, "Peace and safety," destruction will come on them suddenly, as labor pains on a pregnant woman, and they will not escape.
1 Thessalonians 5:3
For more interesting dates, please read: http://www.fivedoves.com/letters/aug2014/luisv831.htm