Question

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, is 20. ​(d) Could we have computed the confidence intervals in parts​ (a)-(c) if the population had not been normally​ distributed?

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 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 overbar​, is found to be 115​, and the sample standard​ deviation, s, is found to be 10. ​(a) Construct a 98​% confidence interval about mu if the sample​ size, n, is 16. ​(b) Construct a 98​% confidence interval about mu if the sample​ size, n, is 20. ​(c) Construct a 99​% confidence interval about mu if the sample​ size, n,...
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,...
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 overbar​, is found to be 111​, and the sample standard​ deviation, s, is found to be 10. ​(a) Construct a 96​% confidence interval about mu if the sample​ size, n, is 23. ​(b) Construct a 96​% confidence interval about mu if the sample​ size, n, is 27. ​(c) Construct a 98​% confidence interval about mu if the sample​ size, n,...
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 overbar​, is found to be 107​, and the sample standard​ deviation, s, is found to be 10. ​ (a) Construct a 96​% confidence interval about mu if the sample​ size, n, is 18. ​ (b) Construct a 96​% confidence interval about mu if the sample​ size, n, is 22. ​ (c) Construct a 98​% confidence interval about mu if the...
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 overbar​, is found to be 109​, and the sample standard​ deviation, s, is found to be 10. ​ (a) Construct a 96​% confidence interval about mu if the sample​ size, n, is 13. ​ (b) Construct a 96​% confidence interval about mu if the sample​ size, n, is 29. ​ (c) Construct a 99​% confidence interval about mu if the...
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 overbar ​, is found to be 106 ​, and the sample standard​ deviation, s, is found to be 10 . ​(a) Construct a 96 ​% confidence interval about mu if the sample​ size, n, is 20 . ​(b) Construct a 96 ​% confidence interval about mu if the sample​ size, n, is 13 . ​(c) Construct a 70 ​% confidence...
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 overbar​, is found to be 105​, and the sample standard​ deviation, s, is found to be 10. ​(a) Construct a 95​% confidence interval about mu if the sample​ size, n, is 26. ​(b) Construct a 95​% confidence interval about mu if the sample​ size, n, is 20. ​(c) Construct an 80​% confidence interval about mu if the sample​ size, n,...
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 overbar​, is found to be 110​, and the sample standard​ deviation, s, is found to be 10. ​(a) Construct an 80​% confidence interval about mu if the sample​ size, n, is 29. ​(b) Construct an 80​% confidence interval about mu if the sample​ size, n, is 21. ​(c) Construct a 70​% confidence interval about mu if the sample​ size, n,...
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 overbar​, is found to be 109​, and the sample standard​ deviation, s, is found to be 10. ​(a) Construct a 95​% confidence interval about mu if the sample​ size, n, is 18. ​(b) Construct a 95​% confidence interval about mu if the sample​ size, n, is 14. ​(c) Construct a 90​% confidence interval about mu if the sample​ size, n,...
simple random sample of size n is drawn from a population that is normally distributed. The...
simple random sample of size n is drawn from a population that is normally distributed. The sample​ mean, x overbar​, is found to be 112​, and the sample standard​ deviation, s, is found to be 10. ​(a) Construct a 90​% confidence interval about mu if the sample​ size, n, is 19. ​ (b) Construct a 90​% confidence interval about mu if the sample​ size, n, is 12. ​ (c) Construct an 80​% confidence interval about mu if the sample​ size,...