Question

In: Statistics and Probability

Find the critical value, x2/R and x2/L for c=.98 and n=20 Show work.

Find the critical value, x2/R and x2/L for c=.98 and n=20 Show work.

Solutions

Expert Solution

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 ( ) :


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