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When the value of σ2 (or σ) is not known, it is inappropriate to do a z-test. Group of answer choices True False

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter2: Equations And Inequalities

Section2.4: Complex Numbers

Problem 58E

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Concept explainers

Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.

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When the value of σ²(or σ) is not known, it is inappropriate to do a z-test.

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True

False

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