In: Statistics and Probability
Find the critical value, x2/R and x2/L for c=.98 and n=20 Show work.
Confidence level = c = 0.98
Significance level = = 1 - 0.98 = 0.02 , /2 = 0.01
Sample size = n = 20
Degrees of freedom(df) = n - 1 = 20 - 1 = 19
We have to find left tail critical value ( ) and right tailed critical value ( ) of Chi-square distribution.
Left tail critical value ( ) :
Using Chi-square table ( Chi-square table returns inverse of right tailed probability )
Right tailed critical value ( ) :