Question

Lengths of pregnancies are normally distributed with a mean of 268 days and a standard deviation...

Lengths of pregnancies are normally distributed with a mean of 268 days and a standard deviation of 15 days.

a. What percentage of pregnancies last less than 250 days?

b. What percentage of pregnancies last more than 300 days?

c. If a birth is considered premature if the pregnancy lasts less than 238 days, what is the percentage of premature births?

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

a)

b)

c)

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
The lengths of human pregnancies are normally distributed with a mean of 268 days and a...
The lengths of human pregnancies are normally distributed with a mean of 268 days and a standard deviation of 15 days. What is the probability that a pregnancy lasts at least 300 days? (Remember that this means 300 days or more). Does it appear likely that a pregnancy would last at least 300 days? If we use a definition of premature to be the lowest 3% of pregnancy duration, find the number of days a pregnancy would last that separates...
The lengths of pregnancies are normally distributed with a mean of 268 days and a standard...
The lengths of pregnancies are normally distributed with a mean of 268 days and a standard deviation of 15 days. a. Find the probability of a pregnancy lasting 308 days or longer. b. If the length of pregnancy is in the lowest 3​%, then the baby is premature. Find the length that separates premature babies from those who are not premature. a. The probability that a pregnancy will last 308 days or longer is ? b. Babies who are born...
Lengths of pregnancies are normally distributed with a mean of 268 days and a standard deviation...
Lengths of pregnancies are normally distributed with a mean of 268 days and a standard deviation of 15 days, find the probability of a pregnancy lasting between 250 and 280 days, find the probability of a pregnancy lasting longer than 285 days, find the number that represents the 95% percentile
The lengths of human pregnancies are normally distributed with a mean of 268 days and a...
The lengths of human pregnancies are normally distributed with a mean of 268 days and a standard deviation of 15 days. What is the probability that a pregnancy lasts at least 300 days? Write your answer as a decimal rounded to 4 places.
The lengths of pregnancies of humans are normally distributed with a mean of 268 days and...
The lengths of pregnancies of humans are normally distributed with a mean of 268 days and a standard deviation of 15 days.          What percent of pregnancies are due 253 to 283 days? Determine the percent of pregnancies with a duration less than 238 days.
The lengths of pregnancies are normally distributed with a mean of 268 days and a standard...
The lengths of pregnancies are normally distributed with a mean of 268 days and a standard deviation of 15 days. If 20 different pregnancies are randomly selected, find the probability that their mean is less than 273 days
The lengths of a particular​ animal's pregnancies are approximately normally​ distributed, with mean muequals276 days and...
The lengths of a particular​ animal's pregnancies are approximately normally​ distributed, with mean muequals276 days and standard deviation sigmaequals16 days. ​(a) What proportion of pregnancies lasts more than 300 ​days? ​(b) What proportion of pregnancies lasts between 268 and 288 ​days? ​(c) What is the probability that a randomly selected pregnancy lasts no more than 248 ​days? ​(d) A​ "very preterm" baby is one whose gestation period is less than 240 days. Are very preterm babies​ unusual? The proportion of...
3.The lengths of pregnancies are normally distributed with a mean of 267 days and a standard...
3.The lengths of pregnancies are normally distributed with a mean of 267 days and a standard deviation of 15 days. a. Find the probability of a pregnancy lasting 309 days or longer. b. If the length of pregnancy is in the lowest 3​%, then the baby is premature. Find the length that separates premature babies from those who are not premature. a. The probability that a pregnancy will last 309 days or longer is b. Babies who are born on...
The lengths of pregnancies are normally distributed with a mean of 266 days and a standard...
The lengths of pregnancies are normally distributed with a mean of 266 days and a standard deviation of 15 days. a. Find the probability of a pregnancy lasting 307 days or longer. b. If the length of pregnancy is in the lowest 44​%,then the baby is premature. Find the length that separates premature babies from those who are not premature. a. The probability that a pregnancy will last 307 days or longer is [ ]. (Round to four decimal places)...
The lengths of pregnancies are normally distributed with a mean of 269 days and a standard...
The lengths of pregnancies are normally distributed with a mean of 269 days and a standard deviation of 15 days. a. Find the probability of a pregnancy lasting 309 days or longer. b. If the length of pregnancy is in the lowest 2​%, then the baby is premature. Find the length that separates premature babies from those who are not premature. a. The probability that a pregnancy will last 309 days or longer is ?. ​(Round to four decimal places...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT