Question

Determine the critical values for the confidence interval for the population variance from the given values. Round your answers to three decimal places. n=20 and α=0.02.

Answer 1

We have given,              
              
Sample size =n=20      
Degree of freedom =n-1=19  
Level of significance=0.02      
              
by using chi square critical value table or Excel =CHIINV(1-(0.02/2),19)
by using chi square critical value table or Excel =CHIINV((0.02/2),19)