Question

The pregnancy length in days for a population of new mothers can be approximated by a...

The pregnancy length in days for a population of new mothers can be approximated by a normal distribution with a mean of 269

days and a standard deviation of 11days.

​(a) What is the minimum pregnancy length that can be in the top 9​% of pregnancy​ lengths?

​(b) What is the maximum pregnancy length that can be in the bottom 4​%of pregnancy​ lengths?

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

Homework Answers

Answer #1

(a) Let k denotes minimum pregnancy length that can be in the top 9​% of pregnancy​ lengths which is same as 91th perentile

Minimum pregnancy length that can be in the top 9​% of pregnancy​ lengths is 284 days.

(b) Let k denotes the maximum pregnancy length that can be in the bottom 4​%of pregnancy​ lengths.

the maximum pregnancy length that can be in the bottom 4​%of pregnancy​ lengths is 250

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 pregnancy length in days for a population of new mothers can be approximated by a...
the pregnancy length in days for a population of new mothers can be approximated by a normal distribution with a mean of 270 days and a standard deviation of 11 days. A. what is the maximum pregnancy length that can be in the top 11% of pregnancy lengths? B. what is the maximum pregnancy length that can be in the bottom 6% of pregnancy lengths
The pregnancy length in days for a population of new mothers can be approximated by a...
The pregnancy length in days for a population of new mothers can be approximated by a normal distribution with a mean of 265 days and a standard deviation of 12 days. What is the minimum pregnancy length that can be in the top 10​% of pregnancy​ lengths?
The test scores for the analytical writing section of the Graduate Record Examination can be approximated...
The test scores for the analytical writing section of the Graduate Record Examination can be approximated by a normal distribution with a mean of 155.69 and a standard deviation of 5.05. a) What is the maximum score that can be in the bottom 11.4% of Scores? b) Between what two values does the middle 74% lie? c) What is the minimum score that can be in the top 4.5%
The red blood cell counts​ (in millions of cells per​ microliter) for a population of adult...
The red blood cell counts​ (in millions of cells per​ microliter) for a population of adult males can be approximated by a normal​ distribution, with a mean of 5.7 million cells per microliter and a standard deviation of 0.3 million cells per microliter. ​(a) What is the minimum red blood cell count that can be in the top 21​% of​ counts? ​(b) What is the maximum red blood cell count that can be in the bottom 12​% of​ counts?
The red blood cell counts​ (in millions of cells per​ microliter) for a population of adult...
The red blood cell counts​ (in millions of cells per​ microliter) for a population of adult males can be approximated by a normal​ distribution, with a mean of 5.8 million cells per microliter and a standard deviation of 0.4 million cells per microliter. ​(a) What is the minimum red blood cell count that can be in the top 26​% of​ counts? ​(b) What is the maximum red blood cell count that can be in the bottom 13​% of​ counts?
The red blood cell counts​ (in millions of cells per​ microliter) for a population of adult...
The red blood cell counts​ (in millions of cells per​ microliter) for a population of adult males can be approximated by a normal​ distribution, with a mean of 5.6 million cells per microliter and a standard deviation of 0.5 million cells per microliter.​(a) What is the minimum red blood cell count that can be in the top 21​% of​ counts?​(b) What is the maximum red blood cell count that can be in the bottom 10​% of​ counts? ​
The red blood cell counts​ (in millions of cells per​ microliter) for a population of adult...
The red blood cell counts​ (in millions of cells per​ microliter) for a population of adult males can be approximated by a normal​ distribution, with a mean of 5.2 million cells per microliter and a standard deviation of 0.3 million cells per microliter. ​(a) What is the minimum red blood cell count that can be in the top 22​% of​ counts? ​(b) What is the maximum red blood cell count that can be in the bottom 13​% of​ counts?
The red blood cell counts​ (in millions of cells per​ microliter) for a population of adult...
The red blood cell counts​ (in millions of cells per​ microliter) for a population of adult males can be approximated by a normal​ distribution, with a mean of 5.95 million cells per microliter and a standard deviation of 0.3 million cells per microliter. ​(a) What is the minimum red blood cell count that can be in the top 26% of​ counts? ​(b) What is the maximum red blood cell count that can be in the bottom 16% of​ counts?
The length of a women's pregnancies are normally distributed with a population mean of 266 days...
The length of a women's pregnancies are normally distributed with a population mean of 266 days and a population standard deviation of 16 days. a. What is the probability of a randomly selected pregnancy lasts less than 260 days? b. A random sample of 20 pregnancies were obtained. Describe the sampling distribution of the sample mean length of pregnancies (eg. Is it approximately normally distributed? Why or why not? What are the mean and standard deviation? c. What is the...
A study reported that the length of pregnancy from conception to birth is approximately normally distributed...
A study reported that the length of pregnancy from conception to birth is approximately normally distributed with mean = 272 days and standard deviation σ = 9 days. Let Φ be the cdf of the standard normal distribution, express the following results in terms of Φ. (a) (5 pts) What proportion of pregnancies last longer than 280 days? (b) (5 pts) A pregnancy is considered full-term if it lasts between 252 days and 298 days. What proportion of pregnancies are...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT