What lasts between 240 and 293 days with the average being 266 days?

1. What percent of pregnancies are predicted to last between 240 and 270 days?
2. What proportion of pregnancies lasts between and days?
3. What is the probability that a randomly selected pregnancy lasts more than 280 days?
4. What percentage of pregnancies are between 234 and 282 days?
5. What is the probability that a pregnancy lasts at least 300 days?
6. How long are the longest 2.5% of all pregnancies?
7. What is the probability that a randomly selected pregnancy lasts less than 272 days?
8. What is the probability that a randomly selected pregnancy lasts less than 261 days?
9. In what range would you expect to find the middle 50% of most pregnancies?
10. What length of time marks the shortest 70% of all pregnancies?
11. What's the probability that the mean duration of these patients pregnancies will be less than days?
12. What is the probability that a randomly selected pregnancy lasts less than 281 days?

What percent of pregnancies are predicted to last between 240 and 270 days?

About 54.7% of pregnancies last less between 240 and 270 days.

What proportion of pregnancies lasts between and days?

So, 95% of all pregnancies will last between 234 and 298 days.

What is the probability that a randomly selected pregnancy lasts more than 280 days?

The probability that a randomly selected pregnancy lasts more than 280 days is 0.1894. The probability that a randomly selected pregnancy lasts fewer than 245 days is 0.0951. Yes, because the probability that a randomly selected pregnancy is less than 224 days is 0.0043. Only about 4 in 1000 births are very preterm.

What percentage of pregnancies are between 234 and 282 days?

99.7%? The middle 68% of all pregnancies last between 266-16 and 266+16 days, 250 to 282. The middle 95% of all pregnancies last between 266-2*16 and 266+2*16 days, 234 to 298 (for future reference, note that this “rule” is Page 3 rounded somewhat compared to the charts).

What is the probability that a pregnancy lasts at least 300 days?

Therefore, the probability of a pregnancy lasts at least 300 days is, 0.0166.

How long are the longest 2.5% of all pregnancies?

How long are the longest 2.5% of all pregnancies? The longest 2.5% of all pregnancies will fall above 2 standard deviations from the mean. 266 + 2 H16L = 298 So the longest 2.5% of all pregnancies last 298 or more days.

What is the probability that a randomly selected pregnancy lasts less than 272 days?

The probability that a randomly selected pregnancy lasts less than 272 days is approximately 0.3516.

What is the probability that a randomly selected pregnancy lasts less than 261 days?

(a) What is the probability that a randomly selected pregnancy lasts less than 261 days? The probability that a randomly selected pregnancy lasts less than 261 days is approximately nothing . (Round to four decimal places as needed.)

In what range would you expect to find the middle 50% of most pregnancies?

1 Expert Answer

The middle 50% of most averages corresponds to the area between the 25th percentile and the 75th percentile.

What length of time marks the shortest 70% of all pregnancies?

b. What length of time marks the shortest 70% of all pregnancies? z = 0.52, so 274 days.

What's the probability that the mean duration of these patients pregnancies will be less than days?

Therefore, probability that the mean duration of pregnancies will be less than 260 days is 0.00187.

What is the probability that a randomly selected pregnancy lasts less than 281 days?

The probability that a randomly selected pregnancy lasts less than 281 days is approximately 0.3538.