Porlorming a new analytical proceduro in triplicale, the percontage of copper in an alloy was found to be 20.54%. with a standard deviation of 0.04,to. Calculate the 95% reliability limits for the mean value.b Express the confidence interval with 95%.c. What is the approximate probabiity of obtaining a value of 24.12% copper?d. If the true amount of copper, obtained by other means, is assumed to be 20.75%.1. What is the absolute error of the now method?2. What in the rolalive error of the neww mothod?

Answered: Porfoming a new analytical procedure in…

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

he mean and standard deviation of a random sample of n measurements are equal to 34.1 and 3.5, respectively. a. Find a 99% confidence interval for μ if n=144. b. Find a 99% confidence interval for μ if n=576.
If you wish to estimate a population mean with a sampling distribution error SE = 0.28 using a 95% confidence interval and you know from prior sampling that o² is approximately equal to 5.2, how many observations would have to be included in your sample? The number of observations that would have to be included in your sample is (Round up to the nearest observation.) C
8. Given: n = distributed. 58, X = 75, and r s 10. The sampled population is normally 義。 Find the 99% confidence interval for u. b. Are the assumptions met? Explain.
Assume that a sample is used to estimate a population mean μ. Find the 95% confidence interval for a sample of size 44 with a mean of 49.5 and a population standard deviation of 18.5. Enter your answer as an open-interval (i.e., parentheses) accurate to 3 decimal places. 95% C.I. = The answer should be obtained without any preliminary rounding.
For a population data set, σ=13.4. How large a sample should be selected so that the margin of error of estimate for a 95% confidence interval for μ is 3.20? Round your answer up to the nearest whole number.
Assume that a sample is used to estimate a population mean μ. Find the 90% confidence interval for a sample of size 69 with a mean of 82.5 and a standard deviation of 21.4. Enter your answer as an open-interval (i.e., parentheses) accurate to 3 decimal places. 90% C.I. = The answer should be obtained without any preliminary rounding.
a. What is the value of the standard error of the estimate (to 4 decima b. Test for a significant relationship by using thet test. Use a = 0.05. %3D What is the value of the t test statistic (to 2 decimals)? What is the p-value? Use Table 2 of Appendix B. Select your answer - What is your conclusion (a = 0.05)? %3D Select your answer - c. Use the F test to test for a significant relationship. Use a = 0.05.
In a random sample of 50 people, the mean body mass index (BMI) was 27.7 and the standard deviation (s) was 6.12(Population standard deviation(sigma) is UNKNOWN. a. Construct a 99% confidence interval for the population mean µ. b. Construct a 95% confidence interval for the population mean µ. Interpret the results. c. How does decreasing the level of confidence in part (d) change the width of the confidence interval?
Solve for D
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
You measure 40 randomly selected textbooks' weights, and find they have a mean weight of 78 ounces. Assume the population standard deviation is 6.4 ounces. Based on this, construct a 90% confidence interval for the true population mean textbook weight. Give your answers as decimals, to two places εμε
Current Attempt in Progress For a population data set, o = 16.40. a. What should the sample size be for a 98% confidence interval for u to have a margin of error of estimate equal to 5.80? n= b. What should the sample size be for a 95% confidence interval for u to have a margin of error of estimate equal to 4.79? n =

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