level of significance In a city A 20% of a random sample of 900 school boys had a certain slightphysicas aefect. In another city B, 18-5% of a random sample of 1600 school boys had the samedefect. Is the difference between the proportions significant ?

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Answered: . In a city A 20% of a random sample of…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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. In a city A 20% of a random sample of 900 school boys had a certain slight physicas aefect. In another city B, 18-5% of a random sample of 1600 school boys had the same defect. Is the difference between the proportions significant ?