Many elementary school students in a school district currently have ear infections. A random sample of children in two different schools found that 11 of 40 at one school and 12 of 30 at the other have ear infections. At the level of significance, is there sufficient evidence to support the claim that a difference exists between the proportions of students who have ear infections at the two schools?

Many elementary school students in a school district currently have ear infections. A random sample of children in two different schools found that 11 of 40 at one school and 12 of 30 at the other have ear infections. At the level of significance, is there sufficient evidence to support the claim that a difference exists between the proportions of students who have ear infections at the two schools?

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 8CR

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