Find the critical values x2 L and x2 R that correspond to th

Find the critical values x^2 L and x^2 R that correspond to the given confidence level and sample size. 90%; n = 20 x^2 L = [ ] x^2 R = [ ]

Solution

As              
              
df = n - 1 =    19          
alpha = (1 - confidence level)/2 =    0.05          
              
Then the critical values for chi^2 are, by table/technology,
              
chi^2(L) =    30.14352721          
chi^2(R) =    10.11701306   [ANSWERS]