c. A random sample of 5000 cars was checked to determine whether they had rear viewcameras. The study revealed that 1000 cars were equipped with these cameras.i. With what degree of confidence can one deduce that the confidence limits ofthe actual proportion of cars having cameras are 0.2±0.016?ii. Find the sample size n if the percentage error of the estimate is less than1.3% assuming a 98% degree of confidence.

here given , sample size n = 5000 and sample proportion car having cameras = 10005000 = 0.2

Answered: i. With what degree of confidence can…

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 margin of error M.E. that corresponds to a sample of size 22 with a mean of 18.9 and a standard deviation of 14.6 at a confidence level of 99.9%.Report ME accurate to one decimal place because the sample statistics are presented with this accuracy.
What sample size is needed to give a margin of error within +1 in estimating a population mean with 99% confidence, assuming a previous sample had s = 2.9. Round your answer up to the nearest integer. sample size=
What sample size is needed to give a margin of error within±0.8 in estimating a population mean with 90% confidence, assuming a previous sample had s = 25. Round your answer up to the nearest integer. sample size = i
79. What is the 90% confidence interval for the difference in population proportions, p1 – p2 , given the following sample data: [-0.0772 , 0.1172] [-0.0499 . 0.0899] [-0.0710 , 0.1110] [-0.0603 , 0.1003]
Test the claim about the population mean, μ, at the given level of significance using the given sample statistics. Claim: μ=50; a=0.09; a=3.15. Sample statistics: x=48.6, n = 68 Identify the null and alternative hypotheses. Choose the correct answer below. OA. Ho: >50 OB. Ho: 50 H₂: H=50 = 50 OC. Ho: 50 Calculate the standardized test statistic. The standardized test statistic is. (Round to two decimal places as needed.) example Get more help. Η: μ OD. Ho: H=50 H₂: <50 F. Ho: H=50 Ha: H50 Clear all Final check
Find the minimum sample size needed to estimate the true mean with margin of error of 9 and at confidence of 90%. Assume the population range is 102. Select one: а. 49 O b. 54 С. 348 O d. 22 е. 21 O f. 19
With 99% confidence, maximum error is 0.06 and the proportion p = 0.5. Find the sample size. a. 463 b. 436 c. 364 d. 643 e. NONE OF THE ABOVE A
Assume that a sample is used to estimate a population mean μ. Find the margin of error M.E. that corresponds to a sample of size 22 with a mean of 62.5 and a standard deviation of 9.6 at a confidence level of 80%.Report ME accurate to one decimal place because the sample statistics are presented with this accuracy. M.E. =
In a random sample of twelve people, the mean driving distance to work was 21.3 miles and the standard deviation was 7.3 miles. Assume the population is normally distributed and use the t-distribution to find the margin of error and construct a 99% confidence interval for the population mean μ. Interpret the results. Identify the margin of error. (Rol square miles miles per hour miles s needed.)
Q2. Use the sample data below to test the hypotheses H: P = P2 = P3 H: Not all population proportions are equal where pi is the population proportion of Yes responses for population i. Use a 0.1 level of significance to answer the following questions. Populations Response 1 2 Yes 150 140 100 No 100 140 100 (A). What is the test statistic value? (B). Observing the x table, what is the possible range of values of the p-value? [Multiple choice with single answer] (a) 0.01
C. To assess the actual mean weight of apples, a farm manager selected a random sample of 75 apples. He found that the sample mean weight was 126.2 grams with standard deviation 8.7 grams. With what degree of confidence can we say that the confidence limits are (126.2±2.57) grams?
Assume that all grade-point averages are to be standardized on a scale between 0 and 6. How many grade-point averages must be obtained so that the sample mean is within 0.012 of the population mean? Assume that a 95% confidence level is desired. If using the range rule of thumb, σ can be estimated as range/4=6−0/4=1.5. Does the sample size seem practical?

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

i. With what degree of confidence can one deduce that the confidence limits of the actual proportion of cars having cameras are 0.2±0.016? ii. Find the sample size n if the percentage error of the estimate is less than 1.3% assuming a 98% degree of confidence.