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d. The true population mean for this population is 90.02. Which of the confidence intervals constructed in parts a through c cover this population mean and which do not? The confidence intervals of part a + cover u but the confidence interval of parts b and c + do(es) not.

d. The true population mean for this population is 90.02. Which of the confidence intervals constructed in parts a through c cover this population mean and which do not? The confidence intervals of part a + cover u but the confidence interval of parts b and c + do(es) not.

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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a. A sample of 355 observations taken from a population produced a sample mean equal to 92.15 and a standard deviation equal to 12.15. Make a 95% confidence interval for u. Round your answers to two decimal places. 90.89 93.41 b. Another sample of 355 observations taken from the same population produced a sample mean equal to 91.40 and a standard deviation equal to 14.05. Make a 95% confidence interval for u. Round your answers to two decimal places. 89.94 92.86 C. A third sample of 355 observations taken from the same population produced a sample mean equal to 89.42 and a standard deviation equal to 13.15. Make a 95% confidence interval for u. Round your answers to two decimal places. 88.05 90.79 d. The true population mean for this population is 90.02. Which of the confidence intervals constructed in parts a through c cover this population mean and which do not? The confidence intervals of part a + cover u but the confidence interval of parts band c + do(es) not.
Transcribed Image Text:a. A sample of 355 observations taken from a population produced a sample mean equal to 92.15 and a standard deviation equal to 12.15. Make a 95% confidence interval for u. Round your answers to two decimal places. 90.89 93.41 b. Another sample of 355 observations taken from the same population produced a sample mean equal to 91.40 and a standard deviation equal to 14.05. Make a 95% confidence interval for u. Round your answers to two decimal places. 89.94 92.86 C. A third sample of 355 observations taken from the same population produced a sample mean equal to 89.42 and a standard deviation equal to 13.15. Make a 95% confidence interval for u. Round your answers to two decimal places. 88.05 90.79 d. The true population mean for this population is 90.02. Which of the confidence intervals constructed in parts a through c cover this population mean and which do not? The confidence intervals of part a + cover u but the confidence interval of parts band c + do(es) not.
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