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
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
20.
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
Step by step
Solved in 3 steps with 1 images
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