The minimum sample sizeneeded to construct a 95%confidence interval for u, witherror not exceeding 3. if thesample is to be drawn from anormal population withvariance 256 isa. 109b. 167C. 14d. 110e. 168

Answered: Image /qna-images/answer/86e7d29c-6fcf-4649-a141-5f26aa0376df.jpg

Answered: The minimum sample size needed to…

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

The following statistics are computed by sampling from three normal populations whose variances are equal: (You may find it useful to reference the table and the g table.) = 30.1, n₁ = 7; 2 = 35.5, n2 = 9; 3 = 40.9, n3 = 4; MSE = 25.0 a. Calculate 95% confidence intervals for H1 H2, H1 - Hз, and μ2 - μз to test for mean differences with Fisher's LSD approach. (Negative values should be indicated by a minus sign. Round final answers to 2 decimal points.) Population Mean Differences H1-H2 H1 H3 H2 H3 Confidence Interval Can we conclude that the population means differ?
The number of hours of resorve capacity of 10 randomly selected automotive battries is shown to 1,78 the right. 1.86 1.51 1.68 1.78 1.98 1.38 1.59 1.45 2.07 Assume the sample is taken from a normally distributed population. Construct 90% confidence intervals for (a) the population variance o and (b) the population standard deviation a. (a) The confidence interval for the population variance is . (Round to three decimal places as needed.) Interpret the results. Select the correct choice below and fill in the answer box(es) to complete your choice. (Round to three decimal places as needed.) OB. bth 90% confidence, it can be said that the population variance is less OA With 90% confidence, it can be said that the population variance is than between and Oc. With 10% confidence, it can be said that the population variance is greater OD. With 10% confidence, it can be said that the population variance is betwoen and than (b) The confidence interval for the population standard deviation is ).…
4. The resilient moduli of 10 samples of a clay mixture are measured and the sample mean is x = 19.50. If an experimenter wishes to use a "known" value o = 1.0 for the standard deviation of the resilient modulus measurements based upon prior experience, construct appropriate 90%, 95%, and 99% two-sided confidence intervals for the average resilient modulus µ. Compare the lengths of the confidence intervals. Do you think it is plausible that the average resilient modulus is equal to 20.0?
A simple random sample of size n is drawn from a population whose population standard deviation , , is known to be 3.8. The sample mean, , is determine to be 59.2. Compute the 90% confidence interval for if the sample size, n, is 45. Question 2 options: (55. 5; 60.25) (55.47; 60.10) (58.27; 60.13) (47.25; 60.13)
Given two independent random samples with the following results: n1=12x‾1=73s1=27n1=12x‾1=73s1=27 n2=12x‾2=102s2=22n2=12x‾2=102s2=22 Use this data to find the 95%95% confidence interval for the true difference between the population means. Assume that the population variances are equal and that the two populations are normally distributed. Step 1 of 3 : Find the point estimate that should be used in constructing the confidence interval.
1. The following information was obtained from two independent samples selected from two normally distributed populations with unknown but equal variances. n̟ = 20; X = 33.75; Sy = 5.25 n, = 23; Construct a 99 % confidence interval for (uy - uy). Y = 28.50; Sy = 4.55
If (30, 110) is a 95% confidence interval for the population mean µ, then the point estimate for u is O a. 70. O b. 80 O c. 30 O d. None of these O e. 110
1.
A previous study estimated the value of p to be 0.54. Find the minimum sample size required to ensure that your estimate ("p) will be within 0.01 of p with 90% confidence.
Given two independent random samples with the following results: n1=10x‾1=89s1=19�1=10�‾1=89�1=19 n2=17x‾2=128s2=28�2=17�‾2=128�2=28 Use this data to find the 90%90% confidence interval for the true difference between the population means. Assume that the population variances are equal and that the two populations are normally distributed. Copy Data Step 1 of 3 : Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places.
20.21
Consider the following data drawn independently from normally distributed populations: (You may find it useful to reference the appropriate table: z table or t table) X₁ = -28.3 2 $1 n1 = 22 = 8.7 X2 = -18.5 2 S2 = 7.9 n2 = 16 a. Construct the 95% confidence interval for the difference between the population means. Assume the population variances are unknown but equal. (Round final answers to 2 decimal places.) Confidence interval is to

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

The minimum sample size needed to construct a 95% confidence interval for u, with error not exceeding 3. if the sample is to be drawn from a normal population with variance 256 is a. 109 b. 167 С. 14 d. 110 Oe. 168