a. Find the test statistic. chi squared equals. ​(Round to three decimal places as​ needed.)   b.  Find the​ P-value of the test statistic.   The​ P-value of the test statistic is. ​(Round to three decimal places as​ needed.)

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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A simple random sample of 29 filtered​ 100-mm cigarettes is obtained from a normally distributed​ population, and the tar content of each cigarette is measured. The sample has a standard deviation of 0.20 mg. Use a 0.05 significance level to test the claim that the tar content of filtered​ 100-mm cigarettes has a standard deviation different from 0.30 ​mg, which is the standard deviation for unfiltered​ king-size cigarettes. Complete parts​ (a) through​ (b) below.

 

a. Find the test statistic. chi squared equals. ​(Round to three decimal places as​ needed.)
 
b.  Find the​ P-value of the test statistic.   The​ P-value of the test statistic is. ​(Round to three decimal places as​ needed.)
Expert Solution
Step 1

a.

The given sample size is 29, sample standard deviation is 0.20, and population standard deviation is 0.30.

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