Here we need to use df=n-1=5-1=4, and look it up in the table for p=0.99
Here we need to use df=n-1=23 and look it up in the table for p=0.025
Here we need to use the formula for confidence interval for standard deviation.
Chi_R= 20.0900, Chi_L= 1.6460, obtained from the table, use df=n-1=,p=99 or p=.01...
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