=The diameters (in inches) of 17 randomly selected bolts produced by a machine are listed. Use a 95% level ofconfidence to construct a confidence interval for (a) the population variance o² and (b) the population standarddeviation σ. Interpret the results.4.484 4.431 4.025 4.341 4.003 3.775D3.816 3.754 4.223 3.9634.126 4.5613.967 3.758 3.881 3.827 4.434(a) The confidence interval for the population variance is (☐☐).(Round to three decimal places as needed.).

Answered: Image /qna-images/answer/cc016f3a-fb6b-4e2a-a842-0d876dd09046.jpg

Answered: = The diameters (in inches) of 17…

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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The waiting times (in minutes) of a random sample of 21 people at a bank have a sample standard deviation of 4.8 minutes. Construct a confidence interval for the population variance o and the population standard deviation o. Use a 90% level of confidence. Assume the sample is from a normally distributed population. What is the confidence interval for the population variance o? (I ) (Round to one decimal place as needed.) Interpret the results. Select the correct choice below and fill in the answer box(es) to complete your choice. (Round to one decimal place as needed.) O A. With 10% confidence, you can say that the population variance is O B. With 10% confidence, you can say that the population variance is between and greater than O C. With 90% confidence, you can say that the population variance is less O D. With 90% confidence, you can say that the population variance is between and than What is the confidence interval for the population standard deviation o? D (Round to one decimal…
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Salaries of 40 college graduates who took a statistics course in college have a mean, x overbar, of $64,200. Assuming a standard deviation, σ, of $12,042, construct a 95% confidence interval for estimating the population mean μ.
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possible In a random sample of twelve people, the mean driving distance to work was 18.9 miles and the standard deviation was 6.3 miles. Assume the population is normally distributed and use the t-distribution to find the margin of error and construct a 95% confidence interval for the population mean u. Interpret the results. Identify the margin of error. (Round to one decimal place as needed.) Construct a 95% confidence interval for the population mean. (Round to one decimal place as needed.) Interpret the results. Select the correct choice below and fill in the answer box to complete your choice. (Type an integer or a decimal. Do not round.) O A. It can be said that % of the population has a driving distance to work (in miles) that is hetween the interval's endpoints li
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