Question

A simple random sample with n=50 provided a sample mean of 22.5 and a sample standard...

A simple random sample with n=50 provided a sample mean of 22.5 and a sample standard deviation of 4.2 .

a. Develop a 90% confidence interval for the population mean (to 1 decimal).

( , )

b. Develop a 95% confidence interval for the population mean (to 1 decimal).

( , )

c. Develop a 99% confidence interval for the population mean (to 1 decimal).

( , )

d. What happens to the margin of error and the confidence interval as the confidence level is increased?

They increase / They decrease / They stay the same / It cannot be determined from the given data / The margin of error increases and the confidence interval becomes narrower / The margin of error decreases and the confidence interval becomes wider

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
A simple random sample with n=54 provided a sample mean of 24.0 and a sample standard...
A simple random sample with n=54 provided a sample mean of 24.0 and a sample standard deviation of 4.3. a. Develop a confidence interval for the population mean (to 1 decimal). , b. Develop a confidence interval for the population mean (to 1 decimal). , c. Develop a confidence interval for the population mean (to 1 decimal). , d. What happens to the margin of error and the confidence interval as the confidence level is increased? - Select your answer...
A simple random sample with n = 52 provided a sample mean of 28.5 and a...
A simple random sample with n = 52 provided a sample mean of 28.5 and a sample standard deviation of 4.4. (Round your answers to one decimal place.) (a) Develop a 90% confidence interval for the population mean. to (b) Develop a 95% confidence interval for the population mean. to (c) Develop a 99% confidence interval for the population mean. to (d) What happens to the margin of error and the confidence interval as the confidence level is increased? As...
A simple random sample with n=56 provided a sample mean of 23.5 and a sample standard...
A simple random sample with n=56 provided a sample mean of 23.5 and a sample standard deviation of 4.5. a. Develop a 90% confidence interval for the population mean (to 1 decimal). (_____, ______) b. Develop a 95% confidence interval for the population mean (to 1 decimal). (_____, ______) c. Develop a 99% confidence interval for the population mean (to 1 decimal). (_____, ______) d. What happens to the margin of error and the confidence interval as the confidence level...
A simple random sample with N=52 provided a sample mean of 21.0 and a sample standard...
A simple random sample with N=52 provided a sample mean of 21.0 and a sample standard deviation of 4.4. a. Develop a 90% confidence interval for the population mean (to 1 decimal). (________, _________) b. Develop a 95% confidence interval for the population mean (to 1 decimal). (________, _________) c. Develop a 99% confidence interval for the population mean (to 1 decimal). (________, _________) d. What happens to the margin of error and the confidence interval as the confidence level...
A simple random sample with n = 57 provided a sample mean of 22.5 and a...
A simple random sample with n = 57 provided a sample mean of 22.5 and a sample standard deviation of 4.4. (Round your answers to one decimal place.) (a) Develop a 90% confidence interval for the population mean.    to   (b) Develop a 95% confidence interval for the population mean.   to   (c) Develop a 99% confidence interval for the population mean.    to  
A simple random sample with n=50provided a sample mean of 23.5 and a sample standard deviation...
A simple random sample with n=50provided a sample mean of 23.5 and a sample standard deviation of 4.3 a. Develop a 90% confidence interval for the population mean (to 1 decimal).   ,   b. Develop a 95% confidence interval for the population mean (to 1 decimal).   ,   c. Develop a 99% confidence interval for the population mean (to 1 decimal).   ,   d. What happens to the margin of error and the confidence interval as the confidence level is increased?
You may need to use the appropriate appendix table or technology to answer this question. A...
You may need to use the appropriate appendix table or technology to answer this question. A simple random sample with n = 59 provided a sample mean of 26.5 and a sample standard deviation of 4.4. (Round your answers to one decimal place.) (a) Develop a 90% confidence interval for the population mean. to (b) Develop a 95% confidence interval for the population mean. to (c) Develop a 99% confidence interval for the population mean. to (d) What happens to...
The sample data below have been collected based on a simple random sample from a normally...
The sample data below have been collected based on a simple random sample from a normally distributed population. Complete parts a and b. 3 7 0 0 0 1 9 3 9 1 a. Compute a 98% confidence interval estimate for the population mean. The 98% confidence interval for the population mean is from_________ to ___________. (Round to two decimal places as needed. Use ascending order.) b. Show what the impact would be if the confidence level is increased to...
Example Problem: [Ch 8, Q14] A simple random sample with n=54 provided a sample mean of...
Example Problem: [Ch 8, Q14] A simple random sample with n=54 provided a sample mean of 22.5 and a sample standard deviation of 4.4. Develop a 90% confidence interval for the population mean using the relevant fact: i) for a tdistribution with 53 degrees of freedom, ?(? > 1.674) = 0.05; ii) for a tdistribution with 54 degrees of freedom, ?(? > 1.297) = 0.10.
A simple random sample of size n is drawn. The sample? mean,x is found to be...
A simple random sample of size n is drawn. The sample? mean,x is found to be 17.6 and the sample standard? deviation, s, is found to be 4.1 (a) Construct a 95% confidence interval about ? if the sample size, n, is 34 The confidence interval is? (b) Construct a 95% confidence interval about ? if the sample size, n, is 61 The confidence interval is (?,?) (use ascending order. Round to two decimal places as needed) How does increasing...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT