Use the given information to find the number of degrees of freedom, the critical values x and x6, and the confidence interval estimate of o. It is reasonable to assume that a simple random sample has been selected from population with a normal distribution. Platelet Counts of Women 95% confidence; n = 28, s = 65.4. Click the icon to view the table of Chi-Square critical values. df = (Type a whole number.)
Use the given information to find the number of degrees of freedom, the critical values x and x6, and the confidence interval estimate of o. It is reasonable to assume that a simple random sample has been selected from population with a normal distribution. Platelet Counts of Women 95% confidence; n = 28, s = 65.4. 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
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![**Topic: Estimation of Variability in Platelet Counts**
In this section, you are tasked with determining the number of degrees of freedom, the critical chi-square values (\( \chi^2_L \) and \( \chi^2_R \)), and the confidence interval estimate of the standard deviation (\( \sigma \)) for platelet counts in women. It is assumed that the sample is drawn from a normally distributed population.
**Details:**
- **Confidence Level:** 95%
- **Sample Size (n):** 28
- **Sample Standard Deviation (s):** 65.4
To proceed:
- **Step 1:** Calculate the degrees of freedom (df). This can be found using the formula \( \text{df} = n - 1 \).
- **Step 2:** Use the degrees of freedom to find the critical values from the chi-square distribution table. Click on the provided icon to access the table of Chi-Square critical values.
- **Data Entry:** Enter the calculated degrees of freedom in the provided box ([Type a whole number]).
Understanding these values is crucial for constructing a confidence interval to estimate the true standard deviation of the population.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F66ac5d0d-fc89-4c09-8186-ee5bac8ff70c%2F0a9ac054-1707-4fdc-bdf1-7baec8f46aa8%2Fpdf5c9q_processed.png&w=3840&q=75)
Transcribed Image Text:**Topic: Estimation of Variability in Platelet Counts**
In this section, you are tasked with determining the number of degrees of freedom, the critical chi-square values (\( \chi^2_L \) and \( \chi^2_R \)), and the confidence interval estimate of the standard deviation (\( \sigma \)) for platelet counts in women. It is assumed that the sample is drawn from a normally distributed population.
**Details:**
- **Confidence Level:** 95%
- **Sample Size (n):** 28
- **Sample Standard Deviation (s):** 65.4
To proceed:
- **Step 1:** Calculate the degrees of freedom (df). This can be found using the formula \( \text{df} = n - 1 \).
- **Step 2:** Use the degrees of freedom to find the critical values from the chi-square distribution table. Click on the provided icon to access the table of Chi-Square critical values.
- **Data Entry:** Enter the calculated degrees of freedom in the provided box ([Type a whole number]).
Understanding these values is crucial for constructing a confidence interval to estimate the true standard deviation of the population.
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