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2 Use the given information to find the number of degrees of freedom, the critical values x² and x², and the confidence interval estimate of o. It is reasonable to assume that a simple random sample has been selected from a population with a normal distribution. Nicotine in menthol cigarettes 80% confidence; n = 20, s = 0.23 mg. Click the icon to view the table of Chi-Square critical values. df = (Type a whole number.)

2 Use the given information to find the number of degrees of freedom, the critical values x² and x², and the confidence interval estimate of o. It is reasonable to assume that a simple random sample has been selected from a population with a normal distribution. Nicotine in menthol cigarettes 80% confidence; n = 20, s = 0.23 mg. Click the icon to view the table of Chi-Square critical values. df = (Type a whole number.)

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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20.

**Chi-Square Critical Values and Degrees of Freedom Calculation** To determine the number of degrees of freedom, as well as the critical values \( \chi^2_L \) and \( \chi^2_R \), and the confidence interval estimate of \( \sigma \), use the following scenario. It is assumed that a simple random sample has been drawn from a normally distributed population. **Scenario Details:** - Topic: Nicotine in Menthol Cigarettes - Confidence Level: 80% - Sample Size (\( n \)): 20 - Sample Standard Deviation (\( s \)): 0.23 mg **Instructions:** - Click the icon to access the table of Chi-Square critical values. **Calculation Prompt:** - Enter the number of degrees of freedom (df) in the provided space. Use a whole number for your response. This exercise is designed to practice calculating the degrees of freedom and identifying Chi-Square critical values in the context of constructing confidence intervals for the population standard deviation.
Transcribed Image Text:**Chi-Square Critical Values and Degrees of Freedom Calculation** To determine the number of degrees of freedom, as well as the critical values \( \chi^2_L \) and \( \chi^2_R \), and the confidence interval estimate of \( \sigma \), use the following scenario. It is assumed that a simple random sample has been drawn from a normally distributed population. **Scenario Details:** - Topic: Nicotine in Menthol Cigarettes - Confidence Level: 80% - Sample Size (\( n \)): 20 - Sample Standard Deviation (\( s \)): 0.23 mg **Instructions:** - Click the icon to access the table of Chi-Square critical values. **Calculation Prompt:** - Enter the number of degrees of freedom (df) in the provided space. Use a whole number for your response. This exercise is designed to practice calculating the degrees of freedom and identifying Chi-Square critical values in the context of constructing confidence intervals for the population standard deviation.
Expert Solution
Step 1: determine the given variable

Confidence level (c) =80%

Sample size=20

Sample standard deviation=0.23 mg

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