Question

With a sample size n = 25 measurements, we find that ?̅ = 8. Assuming that...

With a sample size n = 25 measurements, we find that ?̅ = 8. Assuming that ? equals 2, calculate confidence intervals for the population mean μ with the confidence levels 95% and 92%.

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A sample of size n = 36 produced the sample mean of 9. Assuming the population...
A sample of size n = 36 produced the sample mean of 9. Assuming the population standard deviation = 4, compute a 95% confidence interval for the population mean. a) 8.33 ≤ μ ≤ 9.67 b) 7.04 ≤ μ ≤ 10.96 c) 5 ≤ μ ≤ 14 d) 7.69 ≤ μ ≤ 10.31
Suppose that we take a random sample of size n from a population having a mean...
Suppose that we take a random sample of size n from a population having a mean μ and a standard deviation of σ. What is the probability or confidence we have that our sample will be within +/- 1 of the population mean μ? (a) μ = 10, σ = 2, n = 25
The mean and standard deviation of a random sample of n measurements are equal to 34.1...
The mean and standard deviation of a random sample of n measurements are equal to 34.1 and 3.6, respectively. a. Find a 90% confidence interval for μ if n=144. b. Find a 90% confidence interval for μ if n=576. c. Find the widths of the confidence intervals found in parts a and b. What is the effect on the width of a confidence interval of quadrupling the sample size while holding the confidence coefficient​ fixed?
We have a sample of size n = 36 with mean x with bar on top...
We have a sample of size n = 36 with mean x with bar on top space equals 12. If population standard deviation, sigma equals 2, what is the upper limit of 95% confidence interval (zα/2=1.96) of population mean µ?
A simple random sample of size n is drawn from a population that is normally distributed....
A simple random sample of size n is drawn from a population that is normally distributed. The sample​ mean, overbar x​, is found to be 115​, and the sample standard​ deviation, s, is found to be 10. ​(a) Construct a 98​% confidence interval about μ if the sample​ size, n, is 20. ​(b) Construct a 98​% confidence interval about μ if the sample​ size, n, is 25. ​(c) Construct a 99​% confidence interval about μ if the sample​ size, n,...
sample of size n=44 drawn from a population with σ=7.5 has x¯=17.9. Find a 92% confidence...
sample of size n=44 drawn from a population with σ=7.5 has x¯=17.9. Find a 92% confidence interval for the population mean by completing each of the following in turn. Round all your answers to the nearest hundredth. x¯= c= zc= E= Confidence interval is ( , ) E = 1.97866819879157 The systolic blood pressure (SBP) of a certain population is normally distributed with standard deviation 6 mmHg. A sample of 24 members of this population was found to have an...
A simple random sample of size n is drawn from a population that is normally distributed....
A simple random sample of size n is drawn from a population that is normally distributed. The sample​ mean, x​, is found to be 115​, and the sample standard​ deviation, s, is found to be 10. ​(a) Construct a 95​% confidence interval about μ if the sample​ size, n, is 22. ​(b) Construct a 95​% confidence interval about μ if the sample​ size, n, is 12. ​(c) Construct a 90​% confidence interval about μ if the sample​ size, n, is...
A random sample of size n=25 from N(μ, σ2=6.25) yielded x=60. Construct the following confidence intervals...
A random sample of size n=25 from N(μ, σ2=6.25) yielded x=60. Construct the following confidence intervals for μ. Round all your answers to 2 decimal places. a. 95% confidence interval: 95% confidence interval = 60 ± ? b. 90% confidence interval: 90% confidence interval = 60 ± ? c. 80% confidence interval: 80% confidence interval = 60 ± ?
A simple random sample of size n is drawn from a population that is normally distributed....
A simple random sample of size n is drawn from a population that is normally distributed. The sample mean x bar is found to be 109, and the sample standard​ deviation, s, is found to be 10. a. Construct 95% confidence interval about miu, if the sample size n is 28. Find lower and upper bound. ​b. Construct 95% confidence interval about miu, if the sample size n is 17. Find lower and upper bound. c.Construct 80% confidence interval about...
A simple random sample of size n is drawn from a population that is normally distributed....
A simple random sample of size n is drawn from a population that is normally distributed. The sample​ mean, is found to be 109, and the sample standard​ deviation, s, is found to be 10. ​(a) Construct a 98% confidence interval about m μ if the sample​ size, n, is 21. ​(b) Construct a 98% confidence interval about mu μ if the sample​ size, n, is 26. ​(c) Construct a 99% confidence interval about mu μ if the sample​ size,...