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Chapter 12: Q. 12.7 (page 484)

For a 蠂2-curve with df=10, determine

a. 蠂0.052

b.蠂0.025

Short Answer

Expert verified

Part a: The 蠂2value that has area 0.05with 10degrees of freedom is, 18.3which is illustrated graphically below,

Part b: The 蠂2value that has area 0.025with 10degrees of freedom is, 20.5which is illustrated graphically below,

Step by step solution

01

Part a Step 1. Given information

The number of degrees of freedom is,10.

02

Part a Step 2. To find the required χ2 value, we use table V.

The number of degrees of freedom is10, so first we go down the outside columns. Then going across that row to the column labeled 蠂0.052, we reach 18.3.

03

Part a Step 3. Let us illustrate our work graphically.

04

Part b Step 1. Given information

The number of degrees of freedom is,10.

05

Part b Step 2. To find the required χ2 value we use table V.

The number of degrees of freedom is, 10,so first we go down the outside column. Then going across that row to the column labeled 蠂0.0252, we reach20.5.

06

Part b Step 3. Let us illustrate our work graphically.

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