A machine is producing metal pieces that are cylindrical in shape.A sample of pieces is taken, and the diameters are: 1.01, 0.97,1.03, 1.04, 0.99, 0.98, 0.99, 1.01 and 1.03 centimeter. Find a 99%confidence interval for the mean diameter of pieces from thismachine assuming an approximate normal distribution. Note:Variance = o2 = E ( X; – X)2 / (n – 1) and o= v variance

For the given data Find 99% Confidence interval for mean

Answered: A machine is producing metal pieces…

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

For a sample from a normal distribution with standard deviation σσ, the standard deviation of the sampling distribution of the sample mean is σ/8σ/8. What is the size of the sample
A population of values has a normal distribution with μ=185.7μ=185.7 and σ=57.5σ=57.5. You intend to draw a random sample of size n=57n=57.Find P25, which is the score separating the bottom 25% scores from the top 75% scores.P25 (for single values) = Find P25, which is the mean separating the bottom 25% means from the top 75% means.P25 (for sample means) =
Given a normal distribution with mean 100 and standard deviation 10, find the area under the normal curve from the mean to 112.9.
b. Determine the critical value and draw the normal curve.
A population has a mean µ = 161 and a standard deviation o = 20. Find the mean and standard deviation of the sampling distribution of sample means with sample size n = 56. The mean is = μx (Round to three decimal places as needed.) and the standard deviation is o- = X 3 X
Hemoglobin levels in 11-year-old boys vary according to a normal distribution with σ=1.2 g/dL. How large a sample is needed to estimate µ with 95% confidence so the margin of error is no greater than 0.5 g/dL?
Suppose x has a normal distribution with mean μ = 57 and standard deviation σ = 7.Describe the distribution of x values for sample size n = 4. (Round σx to two decimal places.)
A population of values has a normal distribution with μ=153.9 and σ=18.8. You intend to draw a random sample of size n=121. Find P19, which is the mean separating the bottom 19% means from the top 81% means.P19 (for sample means) = Enter your answers as numbers accurate to 1 decimal place. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.
Medical Operations The director of a medical hospital feels that her surgeons perform fewer operations per year than the national average of 211. She selected a random sample of 15 surgeons and found that the mean number of operations they performed was 209.3. The standard deviation of the sample was 3.8. Is there enough evidence to support the director's feelings at =α0.01? Assume that the population is approximately normally distributed. Use the critical value method and tables.
Using Excel to calculate to 2 decimal places, if X follows a normal distribution with mean 55 and variance 16 and PDX > y) = 0.401294 then pic 5
Find the inflection points of a normal random variable with mean of u (Mu) and a standard deviation of sigma
A population of values has a normal distribution with μ=105.7μ=105.7 and σ=10.3σ=10.3. You intend to draw a random sample of size n=99n=99.What is the mean of the distribution of sample means?μ¯x=μx¯= What is the standard deviation of the distribution of sample means?(Report answer accurate to 2 decimal places.)

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