Question

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

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

Homework Answers

Answer #1

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 pregnancies are normally distributed with a mean of 273 days and a standard...
The lengths of pregnancies are normally distributed with a mean of 273 days and a standard deviation of 15 days. If 36 women are randomly selected, find the probability that they have a mean pregnancy between 273 days and 275 days.
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 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. if 36 women are randomly​ selected, find the probability that they have a mean pregnancy between 266 days and 268 days
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?
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...
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.
A. The lengths of pregnancies are normally distributed with a mean of 272 days and a...
A. The lengths of pregnancies are normally distributed with a mean of 272 days and a standard deviation of 15 days. If 35 women are randomly selected, find the probability that they have a mean pregnancy between 271 days and 275 days. B. The body temperatures of adults are normally distributed with a mean of 98.6° F and a standard deviation of 0.50° F. If 25 adults are randomly selected, find the probability that their mean body temperature is greater...
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...
1. Assume that the lengths of human pregnancies are normally distributed with a mean of 266...
1. Assume that the lengths of human pregnancies are normally distributed with a mean of 266 days and a standard deviation of 16 days. A. Determine the probability that a randomly selected pregnancy lasts between 252 and 273 days. B. If a random sample of 20 pregnancies is selected, determine the probability that the sample mean will fall between 252 and 273 days.
The lengths of a particular​ animal's pregnancies are approximately normally​ distributed, with mean muequals254 days and...
The lengths of a particular​ animal's pregnancies are approximately normally​ distributed, with mean muequals254 days and standard deviation sigmaequals8 days. ​(a) What proportion of pregnancies lasts more than 268 ​days? ​(b) What proportion of pregnancies lasts between 248 and 256 ​days? ​(c) What is the probability that a randomly selected pregnancy lasts no more than 246 ​days? ​(d) A​ "very preterm" baby is one whose gestation period is less than 234 days. Are very preterm babies​ unusual?
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT