A tire manufacturer wants to ensure that the tires produced are of a consistent quality so that there is not a wide spread in tire mileage. The quality control team uses a 90% confidence interval of the variance, and routinely test a total of 12 tires. Based on this information indicate: What is the Lower Critical Value used to calculate the confidence interval? (Use the chi-squared table provided in class and round to the nearest tenth) What is the Upper Critical Value used to calculate the confidence interval? (Use the chi-squared table provided in class and round to the nearest tenth)
A tire manufacturer wants to ensure that the tires produced are of a consistent quality so that there is not a wide spread in tire mileage. The quality control team uses a 90% confidence interval of the variance, and routinely test a total of 12 tires. Based on this information indicate: What is the Lower Critical Value used to calculate the confidence interval? (Use the chi-squared table provided in class and round to the nearest tenth) What is the Upper Critical Value used to calculate the confidence interval? (Use the chi-squared table provided in class and round to the nearest tenth)
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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Transcribed Image Text:### Tire Quality Control Confidence Interval Calculation
A tire manufacturer aims to ensure consistent quality in tire production to minimize the variability in tire mileage. The quality control team uses a 90% confidence interval of the variance, testing a sample of 12 tires to monitor this consistency. Based on this context, please calculate the following:
1. **Lower Critical Value Calculation:**
- Determine the lower critical value using the chi-squared table provided in class.
- Round your final answer to the nearest tenth.
2. **Upper Critical Value Calculation:**
- Determine the upper critical value using the chi-squared table provided in class.
- Round your final answer to the nearest tenth.
For both calculations, ensure to apply the appropriate degrees of freedom for the data set.
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