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=13 and α=0.02 .

Answer 1

Solution :

Given that,

n = 13

Degrees of freedom = df = n - 1 = 13

= 0.02

/ 2 = 0.02 / 2 = 0.01

1 - / 2 = 1 - 0.01 = 0.99

²_L = ²_/2,df = 26.217

²_R = ²_{1 - /2,df} = 3.571

Critical values are : 3.571 and 26.217