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 overbarx, 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 23.

(b) Construct a 95% confidence interval about μ if the sample size, n, is 18.

(c) Construct a 70% confidence interval about μ if the sample size, n, is 23.

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

Click the icon to view the table of areas under the t-distribution.

(a) Construct a 95% confidence interval aboutμ if the sample size, n, is 23.

Lower bound: Upper bound:

Expert Solution

( a )

( b )

( c )

( d )

No because the sample size is too small

orchestra answered 2 years ago

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 an 80% confidence interval about mu if the sample size, n, is 12. (b) Construct an 80% 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 112, 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 26. (b) Construct a 95% confidence interval about μ if the sample size, n, is 17. (c) Construct an 80% confidence interval about μ 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 overbarx, is found to be 106106, and the sample standard deviation, s, is found to be 1010. (a) Construct aa 9595% confidence interval about muμ if the sample size, n, is 1111. (b) Construct aa 9595% confidence interval about muμ if the sample size, n, is 2929. (c) Construct aa 9999% confidence interval about muμ 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 overbarx, is found to be 110, and the sample standard deviation, s, is found to be 10. (b) Construct a 95% confidence interval about μ if the sample size, n, is 13. (c) Construct a 70% confidence interval about μ if the sample size, n, is 25. (d) Could we have computed the confidence intervals in parts (a)-(c) 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 an 95 % confidence interval about mu if the sample size, n, is 18 . The Lower Bound and Upper Bound (b) Construct an 95 % confidence interval about mu if the sample size, n, is 25 ....

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 an 95 % confidence interval about mu if the sample size, n, is 18 . The Lower Bound and Upper Bound (b) Construct an 95 % confidence interval about mu if the sample size, n, is 25 ....

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 110, 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 23. (Use ascending order. Round to one decimal place as needed.) Lower bound: ____ Upper bound:____ (b) 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 with population standard deviation of 13 (σ =13). The sample mean is 108 (?̅= 108). Compute a 96 percent confidence interval for the population mean (μ) for a sample size of 25 (n = 25). a. Will you use a z value or a t value in your calculation? Explain? b. What is the value of z or t that you will use in...

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 overbarx, is found to be 105105, and the sample standard deviation, s, is found to be 1010. (a) Construct aa 9898% confidence interval about muμ if the sample size, n, is 1515. (b) Construct aa 9898% confidence interval about muμ if the sample size, n, is 2424. (c) Construct aa 9999% confidence interval about muμ 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 90% confidence interval about mu if the sample size, n, is 21. (b) Construct a 90% confidence interval about mu if the sample size, n, is 29. (c) Construct a 95% confidence interval about mu if the sample size, n,...

Question

A simple random sample of size n is drawn from a population that is normally distributed....

Solutions

Expert Solution

Related Solutions

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....

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....

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....

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...

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....