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 (
) :