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4. The z-value used when computing confidence intervals for proportion vary by degrees 3. The t-distribution is unique for each of freedom. 5. The confidence interval estimate of the population mean is constructed around the sample mean. 6. The t-distribution is used to construct confidence interval for the population mean when the population standard deviation is known. la statistic that is used to estimate the population

4. The z-value used when computing confidence intervals for proportion vary by degrees 3. The t-distribution is unique for each of freedom. 5. The confidence interval estimate of the population mean is constructed around the sample mean. 6. The t-distribution is used to construct confidence interval for the population mean when the population standard deviation is known. la statistic that is used to estimate the population

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Np 4 5 6
I. Write TRUE if the statement is correct, or FALSE otherwise. 1. A sample statistic that is used to estimate the population parameter is called estimat 2. When population standard deviation is not known, sample standard deviation can a good estimator of population standard deviation. 3. The t-distribution is unique for each different degree of freedom. 4. The z-value used when computing confidence intervals for proportion vary by degr of freedom. 5. The confidence interval estimate of the population mean is constructed around the sample mean. 6. The t-distribution is used to construct confidence interval for the population mean when the population standard deviation is known. 7. An interval estimate is the sample statistic that is used to estimate the population parameter. 8. If 90% confidence interval estimate is increased to 95% confidence interval estimate, the width of the interval will also increase. 9. The best point estimator for the populatoion mean is the sampe mean. 10. The 95% confidence interval for a population mean implies that there is a 0.95 probability that the true population parameter mean will be contained in the interval II. Multiple Choice: Write the letter of your answer on the blank provided. A random sample of 111 bottles of perfume showed an average content It is known that the population standard deviation of the contents is 0.33 ounces. In this problem, the 12 ounces is 1. 12 ounces. C. the standard error A. a parameter B. a statistic D. sample size 2. What is the margin of error for the estimation of the population mean when s=24.5, n=25,and =50.3 at 90% confidence level? A. 8.33 C. 8.38 B. 8.35 D, 8.39 3. What is the critical value t for the confidence level 99% and n= 27 to estimate the confidence interval of the population mean? A. 2.052 B. 2.056 C. 2.771 D. 2.779
Transcribed Image Text:I. Write TRUE if the statement is correct, or FALSE otherwise. 1. A sample statistic that is used to estimate the population parameter is called estimat 2. When population standard deviation is not known, sample standard deviation can a good estimator of population standard deviation. 3. The t-distribution is unique for each different degree of freedom. 4. The z-value used when computing confidence intervals for proportion vary by degr of freedom. 5. The confidence interval estimate of the population mean is constructed around the sample mean. 6. The t-distribution is used to construct confidence interval for the population mean when the population standard deviation is known. 7. An interval estimate is the sample statistic that is used to estimate the population parameter. 8. If 90% confidence interval estimate is increased to 95% confidence interval estimate, the width of the interval will also increase. 9. The best point estimator for the populatoion mean is the sampe mean. 10. The 95% confidence interval for a population mean implies that there is a 0.95 probability that the true population parameter mean will be contained in the interval II. Multiple Choice: Write the letter of your answer on the blank provided. A random sample of 111 bottles of perfume showed an average content It is known that the population standard deviation of the contents is 0.33 ounces. In this problem, the 12 ounces is 1. 12 ounces. C. the standard error A. a parameter B. a statistic D. sample size 2. What is the margin of error for the estimation of the population mean when s=24.5, n=25,and =50.3 at 90% confidence level? A. 8.33 C. 8.38 B. 8.35 D, 8.39 3. What is the critical value t for the confidence level 99% and n= 27 to estimate the confidence interval of the population mean? A. 2.052 B. 2.056 C. 2.771 D. 2.779
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