Construct the confidence interval for the population variance for the given values. Round your answers to one decimal place.
n=14, s2=13.1, and c=0.8
We have given here,
Sample variance =13.1
Sample size =14
Degree of freedom =n-1= 13
Level of significance given =1-0.80=0.2
Chi square critical value for lower tail=7.042
Chi square critical value for upper tail=19.812
We can use here confidence interval formula for population
variance
=(8.6,24.2)
Lower confidence limit for population variance=8.6
Upper confidence limit for population variance =24.2
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