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10 The manager of the service department of a local car dealership has noted that the service times of a sample of 16 new automobiles has a standard deviation of 5 minutes. A 95% confidence interval estimate for the variance of service times for all their new automobiles is O a. 13.642 to 59.885. Ob. 9.46 to 34.09. O c. 2.144 to 9.948. Od. 2.728 to 11.977. QUESTION 11

10 The manager of the service department of a local car dealership has noted that the service times of a sample of 16 new automobiles has a standard deviation of 5 minutes. A 95% confidence interval estimate for the variance of service times for all their new automobiles is O a. 13.642 to 59.885. Ob. 9.46 to 34.09. O c. 2.144 to 9.948. Od. 2.728 to 11.977. QUESTION 11

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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**Question Completion Status:** **Question 10:** The manager of the service department of a local car dealership has noted that the service times of a sample of 16 new automobiles has a standard deviation of 5 minutes. A 95% confidence interval estimate for the variance of service times for all their new automobiles is - a. 13.642 to 59.885. - b. 9.46 to 34.09. - c. 2.144 to 9.948. - d. 2.728 to 11.977. **Question 11:** If there are three or more populations, then it is - a. possible to test for equality of three or more population proportions. - b. impossible to test for equality of the three population proportions, because chi-square tests deal with only two populations. - c. customary to use a t distribution to test for equality of the three population proportions. - d. reasonable to test for equality of multiple population proportions using chi-square lower tail tests. **Question 12:** A population where each of its element is assigned to one and only one of several classes or categories is a ______ population. - a. multinomial
Transcribed Image Text:**Question Completion Status:** **Question 10:** The manager of the service department of a local car dealership has noted that the service times of a sample of 16 new automobiles has a standard deviation of 5 minutes. A 95% confidence interval estimate for the variance of service times for all their new automobiles is - a. 13.642 to 59.885. - b. 9.46 to 34.09. - c. 2.144 to 9.948. - d. 2.728 to 11.977. **Question 11:** If there are three or more populations, then it is - a. possible to test for equality of three or more population proportions. - b. impossible to test for equality of the three population proportions, because chi-square tests deal with only two populations. - c. customary to use a t distribution to test for equality of the three population proportions. - d. reasonable to test for equality of multiple population proportions using chi-square lower tail tests. **Question 12:** A population where each of its element is assigned to one and only one of several classes or categories is a ______ population. - a. multinomial
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