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Chapter 9: Q.56 (page 540)

A bathroom scale claims to be able to identify correctly any weight within a pound. You think that it cannot be that

accurate. What type of test would you use?

Short Answer

Expert verified

We would use a two-tailed test.

Step by step solution

01

Explanation:

Since we have no idea whether the bathroom scale weighs correctly within a pound on the higher or lower side, therefore a two-tailed test is required here. A two-tailed test is required when the degree of uncertainty cannot be known on the higher or lower side.

02

Explanation: 

Diagram depicting a two-tailed test.

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