**Instruction for Chi-Square Critical Values Calculation****Objective:**Use the given information to find the number of degrees of freedom, the critical values \( \chi^2_L \) and \( \chi^2_R \), and 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.**Data Provided:**- **Sample Type:** Nicotine in menthol cigarettes- **Confidence Level:** 98%- **Sample Size (\( n \)):** 25- **Sample Standard Deviation (\( s \)):** 0.21 mg**Instructions:**1. **Click the icon** to view the table of Chi-Square critical values.2. **Find the Degrees of Freedom (\( df \)):** - Formula: \( df = n - 1 \) - Input the calculated degrees of freedom in the provided box.**Note:**Type a whole number for the degrees of freedom.**Additional Tools:**- Options to view more examples or get additional help are available.- There is a "Clear all" button to reset entries.- Use the "Check answer" button to verify your calculations and inputs.**Interface Instructions:**The interface includes navigation options, a mail tool, and typical web browser functionalities visible along the bottom of the screen for user convenience.

Answered: Use the given information to find the…

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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For the standard normal curve, find the z-score that corresponds to the third quartile. Click here to view page 1 of the standard normal table. Click here to view page 2 of the standard normal table. O A. 0.77 B. - 0.23 O C. -0.67 O D. 0.67
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Use the normal distribution to find a confidence interval for a proportion p given the relevant sample results. Give the best point estimate for p, the margin of error, and the confidence interval. Assume the results come from a random sample. A 99% confidence interval for p given that p = 0.33 and n = 550. Round your answer for the best point estimate to two decimal places, and your answers for the margin of error and the confidence interval to three decimal places.
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