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Chapter 6: Q61E (page 338)

Question:FindZα2foreachofthefollowing:a.α=.10b.α=.01c.α=.05d.α=.20

Short Answer

Expert verified

Answer

  1. 1.645
  2. 2.576
  3. 1.960

4 1.28

Step by step solution

01

Computing Zα2when α is 0.10

a. When αis 0.10, it means that will be equal to 0.05. From the z score table containing the level of significances, the associated critical value of z can be found to be 1.645.

02

Step 2: Computing  Zα2 when α  is 0.01

b. Whenα is 0.01, it means that will be equal to 0.005. From the z score table containing the level of significances, the associated critical value of z can be found to be 2.576.

03

Step 2: Computing  Zα2 when α  is 0.05

c. Whenα is 0.05, it means that will be equal to 0.025. From the z score table containing the level of significances, the associated critical value of z can be found to be 1.960.

04

Step 2: Computing  Zα2 when α  is 0.20

d. Whenα is 0.20, it means that will be equal to 0.10. From the z score table containing the level of significances, the associated critical value of z can be found to be 1.28.

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