A sample of size 8 has a mean of 76 anda standard deviation 9. Assuming thepopulation is distributed N(, 144), thelength of a 99% confidence interval foru is closest to21.8566.a O19.0788 .b O19.7397.c O22.2706.d O1407.37.e O

since we know the population standard deviation i.e., σ=144=12 we would use the following formula…

Answered: A sample of size 8 has a mean of 76 and…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Assume that a sample is used to estimate a population mean μμ. Find the 98% confidence interval for a sample of size 65 with a mean of 64.6 and a standard deviation of 10.2. Enter your answer as an open-interval (i.e., parentheses) accurate to 3 decimal places.98% C.I. = The answer should be obtained without any preliminary rounding.
A sample of size n = 36 is drawn from a population whose standard deviation is σ = 15.6. The sample mean is x = 94.5. Construct a 95% confidence interval.
Suppose that the number of points scored in a game comes from a normal population with an average of 12 points and a standard deviation of 9 points. Estimate the chance that the average points scored in ten randomly selected games will exceed 14.2 points. A. 0.4034 B. 0.0073 C. 0.2198 D. 0.2297
If a sample of size n = 25 is chosen from a normal population, which one of the following is a 95% confidence interval for the population mean when the sample mean is 50 and the sample standard deviation is 6.5? 50 2.064(6.5) O 50 ± 2.06(1.3) 50 ± 2.06(6.5) O 50± 2,064(1.3)
53.305) B. (24.591, 35.563) C. (26.591, 37.563) D. (28.591, 39.563) 34. A simple random sample of size n = 36 is taken from a normally distributed original population. The sample standard deviation iss = 7. Find the 99% confidence interval for the population variance o2. A. (27.453, 98.756) B. (28.453, 99.756) C. (29.453, 100.756) D. (30.453, 101.756)
Assume that a sample is used to estimate a population mean μμ. Find the 99.5% confidence interval for a sample of size 61 with a mean of 34.5 and a standard deviation of 7.4. Enter your answer as an open-interval (i.e., parentheses) accurate to 3 decimal places.99.5% C.I. = The answer should be obtained without any preliminary rounding.
Assume that a sample is used to estimate a population mean μμ. Find the 80% confidence interval for a sample of size 55 with a mean of 85.5 and a standard deviation of 21.5. Enter your answer as an open-interval (i.e., parentheses) accurate to 3 decimal places.a. 80% C.I. = The answer should be obtained without any preliminary rounding
The manager at a large fitness centre keeps track of amount of time it takes a sample of 65 clients to run a mile she finds the mean time to run a mile in this sample is 10.4 minutes with standard deviation of 2.1 minutes. Assume that the sample is random sample that is normally distributed. a. Construct a 68, 95, 99 confidence interval for the parameter of interest in this problem.
A sample of 225 elements from a population with a standard deviation of 60 is selected. The sample mean is 190. Find the 98% confidence interval for u. 180.695 to 199.305 181.8 to 198.2 O 185 to 195 O 130 to 250
15. Construct the confidence interval for the population mean μ. c = 0.90, X = 9.1, a = 0.2, and n = 58 A 90% confidence interval for u is S (Round to two decimal places as needed.)
Assume that a sample is used to estimate a population mean μμ. Find the 99.5% confidence interval for a sample of size 52 with a mean of 36.1 and a standard deviation of 10.4. Enter your answer as an open-interval(i.e., parentheses) accurate to 3 decimal places.99.5% C.I. = Answer should be obtained without any preliminary rounding.
Assume that a sample is used to estimate a population mean μμ. Find the 80% confidence interval for a sample of size 46 with a mean of 15.6 and a standard deviation of 10.2. Enter your answer as an open-interval (i.e., parentheses) accurate to 3 decimal places.80% C.I. = The answer should be obtained without any preliminary rounding.

SEE MORE QUESTIONS

Recommended textbooks for you

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

Elementary Statistics: Picturing the World (7th E…

Statistics

ISBN:

9780134683416

Author:

Ron Larson, Betsy Farber

Publisher:

PEARSON

The Basic Practice of Statistics

Statistics

ISBN:

9781319042578

Author:

David S. Moore, William I. Notz, Michael A. Fligner

Publisher:

W. H. Freeman

Introduction to the Practice of Statistics

Statistics

ISBN:

9781319013387

Author:

David S. Moore, George P. McCabe, Bruce A. Craig

Publisher:

W. H. Freeman

SEE MORE TEXTBOOKS

A sample of size 8 has a mean of 76 and a standard deviation 9. Assuming the population is distributed N(u, 144), the length of a 99% confidence interval for u is closest to 21.8566.a O 19.0788 .b O 19.7397.c O 22.2706.d O 1407.37.e O