Question

Find the critical values chi squared Subscript Upper L and chi squared Subscript Upper R for the given confidence level c and sample size n. cequals0.9​, nequals22 chi squared Subscript Upper Lequals nothing ​(Round to three decimal places as​ needed.) chi squared Subscript Upper Requals nothing ​(Round to three decimal places as​ needed.)

Answer 1

Solution :

Given that,

n = 22

df = n - 1 = 22 - 1 = 21

At 90% confidence level the z is ,

= 1 - 90% = 1 - 0.90 = 0.10

/ 2 = 0.10 / 2 = 0.05

1 -   / 2 = 1 - 0.05 = 0.95

²_L = ² _{/ 2} =  ²_0.05 = 32.671

²_R= ²_{1 - / 2} =  ²_0.95 = 11.591