normal distribution. Nicotine in menthol cigarettes 95% confidence; n = 22, s = 0.27 mg. Click the icon to view the table of Chi-Square critical values. df = (Type a whole number.) x? = (Round to three decimal places as needed.) Y% = (Round to three decimal places as needed.)
normal distribution. Nicotine in menthol cigarettes 95% confidence; n = 22, s = 0.27 mg. Click the icon to view the table of Chi-Square critical values. df = (Type a whole number.) x? = (Round to three decimal places as needed.) Y% = (Round to three decimal places as needed.)
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

Transcribed Image Text:## Educational Exercise: Chi-Square Critical Values and Confidence Interval Estimate
### Instructions:
Use the given information to determine the following:
1. The number of degrees of freedom (df).
2. The critical values \( \chi^2_L \) and \( \chi^2_R \).
3. The confidence interval estimate of \( \sigma \).
It is reasonable to assume that a simple random sample has been selected from a population with a normal distribution.
#### Given Information:
- **Context:** Nicotine in menthol cigarettes with 95% confidence.
- **Sample size:** \( n = 22 \)
- **Sample standard deviation:** \( s = 0.27 \, \text{mg} \).
#### Tasks:
1. **Degrees of Freedom (df):**
- Type a whole number in the provided box.
2. **Critical Values:**
- \( \chi^2_L \): Round to three decimal places as needed and input in the corresponding box.
- \( \chi^2_R \): Round to three decimal places as needed and input in the corresponding box.
#### Additional Resources:
- **Chi-Square Table:** Click the icon to view the table of Chi-Square critical values for reference.
This exercise helps you practice calculating degrees of freedom and critical values for constructing confidence intervals using the Chi-Square distribution.
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